flagyl side effects

Metronidazole Toxicity and Doctor Denial

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Harsh Revelations

“It’s time for you to get past this and move on with your life.” As I sat on a cobalt blue exam table, my primary care physician’s words ping-ponged throughout my mind. Even then, I knew it was a pivotal moment, one that would steer my life into a new and terrifying direction no patient wished to venture.

It was the moment I lost all faith in conventional medicine.

August 12th, 2015.  In front of me, my doctor (we’ll call her Dr. Perry) stared quietly, waiting for a response. There was no anger in her eyes, more like desperation. She was desperate to “reach me,” to get me to understand—what I had was depression and an anxiety disorder. These symptoms I’d described repeatedly, a page-long manifesto of misery, weren’t real—they couldn’t be. It had been two months since I took the antibiotic, metronidazole (Flagyl), and there was no way the medication could be affecting me now.

What she didn’t realize was…I wasn’t the one in denial.

She was.

“I have come across many instances of this kind of reaction by physicians,” explained Derrick Lonsdale, MD, and author of Thiamine Deficiency Disease, Dysautonomia, and High Calorie Malnutrition. “The many symptoms expressed by the patient are interpreted as ‘psychological’ because they appear to be bizarre and conventional lab studies are often normal. The diagnosis is little more than an accusation of malingering. Furthermore, the absolute denial of any sort of vitamin deficiency causing disease in America has become a virtual mantra throughout the medical profession. Any suggestion of this by the patient reinforces the physician’s diagnosis of neurosis.”

“It is very bizarre,” he continued, “to see repeated stories where a drug reaction is denied by physicians. Worse yet is the doctor’s accusation of a patient’s imagination as the cause of symptoms. The Physicians Desk Reference often has one or even two pages listing the toxic effects of a given drug.”

The Beginning of my Metronidazole Nightmare

In June of 2015, I had a gut infection called c diff.  Dr. Perry had diagnosed it and prescribed metronidazole, but five days into treatment, I found myself in the ER, unable to walk or speak.  Included with those symptoms was a list of other issues so random, it was as if someone was picking them out of a big Bingo ball cage: dizziness, difficulty concentrating, shortness of breath, hand tremors, fatigue, brain fog, weakness.

At the time, I wasn’t afraid, because I believed this problem had an simple solution: just stop taking the drug and—poof!—all symptoms would disappear like a quarter in a magic trick.  Another antibiotic was available for c diff, vancomycin, and the problem-solver in me thought this was a no-brainer.

In the ER, they did a CT scan, an EKG, took a urine sample and multiple tubes of blood, only to conclude that the issue was low potassium, even though not all my symptoms matched that diagnosis. Trusting the doctors, I allowed them to discharge me. I got a prescription strength potassium supplement, and then took another dose of metronidazole before heading to bed and then more the following day.

Less than 36 hours later, my mother rushed me to Dr. Perry’s office, as I once again lost the ability to walk and speak.

From the clinic’s lobby, my mother had to half-drag me into the exam room. When she spoke the words “metronidazole” and “side effects” to Dr. Perry, they were met with a face full of skepticism.

“I’ve never seen Flagyl do that before,” Dr. Perry insisted.

After arguing with my mother, the doctor did admit me to the hospital for observation. Maybe Dr. Perry and the ER doctors weren’t well-versed in adverse drug reactions, but hospital physicians were certainly in-the-know.  Right?

Naïve Patient + Ignorant Doctors = Poor Prognosis

“I just can’t imagine it’s the metronidazole,” the pharmacist explained.

Six hours into my hospital stay, two doctors stood by my bed, the pharmacist sandwiched between them. My symptoms had once again improved, and my mother and I had explained what had happened like a song set on repeat. The doctors had tried—and failed—to convince us that metronidazole wasn’t the problem.  So now they had brought in the big guns: the hospital pharmacist. We argued with her—every symptom I had was listed as a side effect of the drug.

“But that type of reaction…it would be really rare,” she had explained.

Game over. Not one doctor believed metronidazole was the problem. They had no other explanation, as my potassium levels had returned to normal now. How could having this drug reaction be so painfully obvious to me and my family, but so confusing to every medical expert I saw?

If left untreated, my infection could be fatal. Unsure what to do, I said softly, “I have to take something to treat the c diff.”

Half an hour later, the nurse brought me more metronidazole. I took it. Later that evening, I took another dose. Then the all-consuming panic set in.

The “Hysterical” Patient

That night in the hospital, my heart pounded so hard, I was afraid it would burst out of my chest “Alien” style. My face felt searing hot while my body shivered.  The anxiety was set to PANIC and stuck there. Adrenaline rushed through my veins like it was fixed to a 30-second timer.

Nothing felt right.

I didn’t fall asleep until 4:00 a.m., and less than two hours later, I woke with a startle although there was nothing there to surprise me. Again, my physical symptoms—the difficulty walking and talking—had come roaring back, along with brain fog, hand tremors, dizziness—the works.

I had an orderly help me to the bathroom and there, I burst into tears. I cursed through slurred words and short breaths, and cried from sheer terror. C diff was a gun to my head, metronidazole a poisoned apple in my hand. And I was being forced to choose between the two.  Another antibiotic was available to treat my infection, but the doctors refused to give it to me.

They were so certain my symptoms were just in my head, they were willing to bet my life on it.

Late morning, my symptoms partially subsided again, and my father visited; he argued with the doctor, my father’s voice much deeper and menacing than Mom’s and mine. “I don’t understand what the big problem is here. She wants to change her meds—so why can’t you do that?”

The doctor in charge of my case finally agreed to give me a prescription for vancomycin, but only after I left the hospital and only if my symptoms were still “bothering” me, as he explained.  Later, after my father left, the same doctor entered my room unattended. He approached my bedside, shoulders squared. “I’m wondering—do you have trouble sleeping at night?” he asked.

Unsure how to answer, I replied sometimes, yes, when there were a lot of things going on.

He bobbed his head up and down, this all-knowing look on his face. “I think you need to see a psychiatrist.”

The bottom fell out of my stomach. I sat there, slack-jawed.

“It’s just…” the doctor stepped forward, and his professional demeanor caved. Those eyebrows knitted together. Impatience, irritation shone like searchlights from both eyes. “What are you so anxious for?

I didn’t respond—didn’t know how to respond. What was I so anxious for? How could this be a question?

Despite the encounter, the hospital doctors later decided to just go ahead and give me vancomycin, with the off-handed disclaimer, “We still don’t think it’s the metronidazole, but…”

I left the hospital the next day, vancomycin in hand.  Despite this nightmare experience, I was relieved in the fact that things would turn back to normal now. I could catalogue all of this into past-tense.

I was wrong.

“Although in many instances of drug use,” explained Dr. Lonsdale, “the side effects disappear when the drug is discontinued; metronidazole is an exception. Through its destruction of thiamine, it leaves in its wake a severe loss of efficiency in cellular energy metabolism. Unless thiamine is restored, the so-called side effects will continue indefinitely. The disaster comes about because the physician’s failure to take the patient’s symptoms seriously does not lead to effective treatment.”

But You Should be Fine Now…

Things barely improved after stopping the metronidazole. Although a few symptoms resolved, like slurred speech, others cropped up from nowhere—some starting days to weeks after stopping the drug:

  • Difficulty swallowing
  • Frequent urination
  • Constipation
  • Asthma-like respiratory issues
  • Complete loss of appetite (twenty pound weight loss)
  • Inability to stand up straight
  • Difficulty walking
  • Shortness of breath when talking
  • Chest pressure
  • Heart palpitations
  • Face flushing
  • Dry mouth
  • Cough
  • Headache
  • Pressure at the back of the head
  • Neck pain and stiffness
  • Constant adrenaline rushes
  • Anxiety
  • Depression
  • Crying spells
  • Insomnia
  • Extreme fatigue

The list was so long, even I failed to fully understand how all these symptoms were possible in one body.  No medical professional had an explanation for why this was happening and why it didn’t stop after discontinuation of metronidazole.

For two months, I couldn’t care for myself. I stayed with my parents; I lost twenty pounds, and no matter how hard I tried, working full-time was impossible. Before metronidazole, I had three jobs—one as a full-time assistant, another part-time job doing data entry, and one writing freelance articles for local magazines. I had to quit my part-time job, stopped writing, and ended up missing over 130 hours of work at my full-time job over that two-month time span. Despite my symptoms being listed as side effects of metronidazole, no diagnosis was given from any physician.  With no doctor to back me up, at one point I worried I’d lose my full-time job.

In total, I saw eight general practitioners, including my primary care physician, and then a hefty bag of specialists: a cardiologist, an immunologist, an ENT doctor, a psychiatrist, and a therapist (to his credit, the therapist believed I had suffered an adverse drug reaction, but just like me, didn’t know why I still had symptoms). There were tests, from multiple CT scans to X-rays, EKGs, an upper GI, an echocardiogram, a heart monitor, a laryngoscopy, several lung function tests, and about 30 vials of blood taken.

One of the general practitioners tested me for illegal drugs. The doctors had more belief I was a drug addict than the idea that metronidazole could be affecting me six weeks after taking it.

When I was ingesting metronidazole, the physicians either insisted it was incapable of causing my symptoms or a reaction like that was “so rare,” it couldn’t happen to me. Now that I was off the drug, the rhetoric had shifted to: “Well, even if you had a reaction, you should be fine now.”

This not only left me feeling defeated and helpless…but ashamed.  I felt so guilty for being so sick.  It was around this time the suicidal thoughts kicked in.

Out of Body, Out of Mind

Six weeks after taking metronidazole, the insomnia worsened. I went eight days with barely any sleep. I tried every medication a doctor offered to mask symptoms, a conveyer belt of meds: Prozac, Paxil, hydroxyzine, Zofran, Ambien, and then mirtazapine. The mirtazapine allowed me to sleep, and with the rest, my body started to improve and the suicidal thoughts calmed. (It was also at this point I started to supplement magnesium and a general multi-vitamin.)

Now August, two weeks into the mirtazapine treatment, I met with Dr. Perry and that’s when she handed down the diagnosis of depression and an anxiety disorder.  “It’s time for you to get past this and move on with your life,” she told me.

I did something else. I stopped trusting doctors, and began researching metronidazole on my own.

When a Google Search is Better than a Medical Degree

During the first two months after my initial reaction, I had looked into metronidazole but assumed (naïvely) that my doctors were too. They were not. If any answers were out there, it was up to me to find them. So I Googled—a lot. It became an obsession; I learned the history of the drug, where it was created (France), when the FDA approved it (the early 1960s). Whatever clinical trials they did at that time has kept the drug on the market for almost 60 years, despite those trials not being acceptable by today’s standards. The medication was considered “broad-spectrum”—a fancy way of saying it went everywhere in the body. The digestive tract, the bloodstream, saliva, genitals, all vital organs including the heart and lungs. Cerebrospinal fluid.  The brain.

In addition to the trivia-facts, I read countless patient reviews on websites like drugs.com, webmd.com and—most of all—askapatient.com. People were complaining about the same symptoms, the same motor control issues, heart and breathing problems, and especially the neuropsychiatric issues.  When anyone mentioned visiting their doctor, it was almost always about how the doctor dismissed the patient’s claim that metronidazole was the cause.

Then in late September 2015, I discovered a new term to plug into Google—metronidazole toxicity.  When I did, I found out that what I had, it had a name:

Metronidazole-induced Central Nervous System Toxicity

It was the title of a systematic review, one that collected numerous case studies about metronidazole and its toxic effects on the central nervous system to form statistic data. The example they used in the review was that of an elderly woman. Two days on the drug, she began to have trouble speaking and then difficulty walking, which progressed to her losing the ability to walk altogether. Metronidazole was discontinued and she made a slow but steady recovery.

In total, the symptoms listed on the systematic review were:

  • Dysarthria (slurred speech/difficulty speaking) 66% of cases
  • Ataxia (loss of motor control skills, such as walking) 56%
  • Dysmetria (lack of coordination of movement) 33%
  • Altered mental state (neuropsychiatric issues) 33%
  • Seizures 15%
  • Nystagmus (involuntary eye movement) 8%

And the cause? If you have issues like losing the ability to walk and speak while taking metronidazole, there is about a 93% chance lesions have formed on the back of your brain, specifically the cerebellum. This causes a disorder called “cerebellar dysfunction,” leading to motor control issues, cognitive issues, and a possible altered mental state.

After drug cessation, the lesions disappear 83% of the time over the course of three months.  There is poor correlation between resolution of those lesions and a resolution of symptoms.

Only 65% of patients fully recover from metronidazole toxicity. Another 29% have improvement, but not a full recovery, another 3% have unknown outcomes, and the remaining 3% have permanent cognitive impairment.

Medical Literature isn’t Enough…Really?

Three weeks after finding this review, I showed it to Dr. Perry. I reminded her of my symptoms, especially my difficulty walking and speaking, my slurred speech and gasping to speak.

“I have no documentation of slurred speech,” she replied.

Her words hit me bullet-hard, and I sat there, dumbfounded. She fished through my chart, reviewing my visit to the ER to the hospital—nothing. Not one doctor had written anything down about my difficulty speaking, despite it being one of my most prominent and concerning symptoms.

In fact, none of the symptoms I complained about during my ER and hospital visit were in my records. The only record they had of any significant symptom was from Dr. Perry herself, noting that I couldn’t walk due to “weakness.” I addressed this with her, and she insisted my difficulty walking in June wasn’t neurological in nature.

I sat in the exam room, staring up at the ceiling, allowing the fluorescent lights to sting my eyes.  Could this really be happening?

Despite this new information, Dr. Perry did agree to order an MRI, the only test that could detect those white matter lesions the systematic review talked about. The MRI was performed two weeks later—now it had been over four months since my initial reaction and, sure enough, nothing showed, as the medical literature said was typical by that point.

Any chance of detecting an abnormality was gone.

During this time, I requested a copy of my own medical records and a little over a month later, they arrived. I read them all; the ER visit—the hospital visit. There was nothing, no mention of difficulty walking or speaking, just as Dr. Perry had explained.  But there was one symptom mentioned several times—anxiety. From the ER, my shortness of breath when talking was excused away as anxiety. And from the hospital, my doctors had written it down thirteen times over the course of my forty-eight hour hospital stay.

Then, at the end of the paperwork, was the last appointment with Dr. Perry, and as I saw what she wrote, my hands tightened around the edges of the papers:

“Patient brought an article to clinic today and she thinks she has “metronidazole-induced CNS toxicity” and she wants an MRI.  Of note, the article states patients that have this have cerebellar dysfunction, altered mental status and seizures. Patient has not had any of these symptoms.”

I’ll never know what was going on in Dr. Perry’s head when she wrote that statement. Could she be this much in denial about the drug’s toxicity to permanently mark my medical records like a scarlet letter?  Or was this now her vain attempt to cover her own mistakes? Either way, it boiled down to one truth:

“Keeping accurate records is the sacred duty of any physician,” explained Dr. Lonsdale, “if not solely for consecutive management of the patient, it is surely for the protection of the physician. To leave out major symptoms described by the patient because it does not fit the doctor’s diagnosis amounts to malpractice.”

I Was a Textbook Case of Metronidazole Toxicity

Over the course of several months, my symptoms slowly improved on their own, where I was able to work full-time and live on my own. But flare up’s were common, some bad enough to land me back in bed. I also discovered that the metronidazole’s neurotoxicity is actually listed in the WARNINGS section of its FDA label, noting the key symptoms being dysarthria (difficulty speaking), ataxia (difficulty walking and/or arm control), and dizziness.

I was a textbook case of this drug’s neurotoxicity and none of my doctor’s had made the connection.  Instead, they chalked it up to hysteria.

Excommunicated: MD Edition

Upon all of these new discoveries, I decided to set up another appointment with Dr. Perry to ask her about my medical records, but a week before the appointment, she called me and, as I sat with the phone hot on my face, I listened to her speech:

“Erin, I want you to know that I care greatly for you. I just want what’s best for you. But I don’t think we have the right ‘doctor/patient’ relationship. So I think it is best if, moving forward, I was no longer your primary care physician.”

Later, I found out she not only dismissed me as a patient but had me banned from the large clinic she worked, including another doctor’s office that I’d never visited that happened to be in the same building.

That would not do, not after all that. I got on the phone with her supervisor, who—at first—flat-out refused to meet with me. It took several minutes and a strong declaration, “I am going to have a meeting,” to get her to agree. A month later, I went to the meeting with Dr. Perry’s supervisor and the clinic’s lawyers (Dr. Perry was not present).  Along with me was my mother and a doctor I worked with who also happened to be friends with the supervisor—a lucky break few patients have.

I brought in emails I sent in June of 2015 discussing my symptoms with doctors, colleagues and friends, including losing the ability to walk and slurred speech—that contradicted what was written on my medical records. Along with the emails, I also had a stack of medical literature including case studies, multiple systematic reviews and the FDA label that confirmed metronidazole’s toxicity. My doctor-friend validated my story, my symptoms and research, and I got the more appropriate diagnoses of “cerebellar dysfunction” and “altered mental state.”

Even after getting the diagnosis, no doctor would acknowledge that metronidazole was the cause.

My ban from the clinics was never lifted.

Metronidazole Toxicity: A Not-So “Rare” Problem

Over the course of a year, my body healed enough for me to enjoy social activities again.  Nonetheless, flare up’s would still arise and they could last for days to months with no explanation.

Researching metronidazole more, I discovered the cerebellum wasn’t the only part of the brain affected. The brain stem was the second most-hit region, and the brain stem controls the autonomic nervous system. This includes: breathing, heart rate, blood pressure, digestion, temperature regulation, sleep-and-wake cycle, and your fight-or-flight response, among many others. Metronidazole could also damage nerves throughout the body, including the eyes and ears, a problem many other patients complained about in their reviews.

Branching out online, I connected with other victims of metronidazole toxicity.  I shared the medical literature and created a blog. In addition, I started a Facebook support group; only people suffering from metronidazole toxicity are allowed to join. When the support group began, there were three of us. Now, three years later, there’s over 600 members.

Despite physicians insisting metronidazole toxicity is rare, patients were screaming about adverse effects across the internet. Metronidazole is the most-reviewed antibiotic on drugs.com, the second-most reviewed on webmd.com and, on askapatient.com website, metronidazole has the highest number of reviews when compared to all drugs, with the oral version of metronidazole having the 5th highest number of 1-star reviews (when all versions of metronidazole are included—IV, oral and gel—the drug has the highest number of 1-star reviews on the site). In addition, on Askapatient, it had the highest complaints about:

  • Headaches
  • Dizziness
  • Anxiety
  • Panic Attacks
  • Depression
  • Disorientation
  • Fatigue

It also had the second-highest number of complaints about confusion and paranoia.  Patients are clearly being outspoken about metronidazole and its serious adverse effects.  But from the medical community…barely a whisper.

How could this be?

Mechanisms of Toxicity and the Thiamine Connection

In November 2017, I suffered one of the worst flare up’s since my drug reaction in 2015.  It just so happened, during that time, I ran across Dr. Lonsdale’s textbook, “Thiamine Deficiency Disease, Dysautonomia, and High Calorie Malnutrition.” It caught my eye because I recalled the word “thiamine” mentioned in a couple of the articles for metronidazole.

I read the book and every symptom I’d had was listed. Going back to research, I discovered that metronidazole is similar to a ring of thiamine (vitamin B1) and, when it comes into contact with the vitamin, it binds to it, destroying it. This plummets the victim into a sudden, severe thiamine deficiency.

The symptoms of metronidazole toxicity and thiamine deficiency disease are identical.

That was why the drug’s toxicity kept “flaring up.” I had been skating on the edge of this drug-induced thiamine deficiency and any time my body endured stress, it depleted the limited thiamine I had gained and plummeted me back into deficiency.

Within two months of supplementing magnesium and high doses of Allithiamine (a fat soluble version of thiamine), my lingering metronidazole toxicity symptoms either resolved or became so mild, they could no longer debilitate me no matter what physical or mental stress my body endured.

A few months ago, I finished painting a house.

Nonetheless, I didn’t get off Scot-free. It has been almost two years since starting the thiamine regimen and, through trial-and-error, it has become apparent that the damage metronidazole has done is most likely permanent. Enzymes that are vitally important in energy metabolism require thiamine and if the symptoms arising from its deficiency are not corrected early in its manifestations—the enzymes deteriorate due to lack of use. To resuscitate the enzymes, megadoses of thiamine are required, usually for a long time. Symptomatic recovery can be expected unless permanent cellular damage has developed.

In other words, if caught early, thiamine deficiency is almost always reversible. Due to medical neglect, I went two and a half years without appropriate treatment.

Only the accidental finding of a book has been responsible for my “almost” recovery. So every day, I have to swallow eight pills to over-saturate my body with high doses of thiamine and also magnesium in order for my cells to function properly. Toxicity symptoms—although no longer crippling—still present themselves on a regular basis. I’ve learned to push through, to manage, to rest more if I’m having an “off day.”

Overall, I felt like I got off easy compared to so many other people suffering from adverse drug reactions, but it still hits me sometimes—the “what if’s.”  What if my doctors hadn’t forced me to continue taking metronidazole?  What if they had recognized the toxicity symptoms early on?  What if they—medical professionals—had researched the drug (surely better and faster than I could have given their medical degrees) and discovered the connection between metronidazole and thiamine long ago?

What if they had simply believed me?

And that’s the scariest part. For two and a half years, I suffered from a chronic illness that was not only very real, but also very treatable. However, because of the ignorance (and sometimes arrogance) of conventional medicine, patients like myself are forced to suffer. We are sick in a way that is inconvenient to doctors and their beliefs in their own medical dogma.

There are some scars that will never heal. My faith in medicine has been shaken to its core, and now that I’ve finally been able to see the medical structure from a different angle, it is obvious that medicine is more like a house of cards than a mighty castle. Doctors scare me now, not because I think they are bad people, but because of one simple truth:

Doctors are in denial.

They are in denial of the drugs they give to us every single day.  My story isn’t an isolated incident.  When it comes to drug reactions and how the medical community responds, my story is—unfortunately—the norm.

“There are four conflicts for a patient who has suffered side effects from Flagyl,” explained Dr. Lonsdale.  “The first is finding that the doctor simply denies that the complex symptoms are the result of a prescription drug and accuses the patient of imagining them. The second hurdle is the difficulty of comprehending that their body has been deprived of thiamine by the action of the drug. The third difficulty is understanding that the toxicity will last as long as the thiamine deficiency exists and that it is not a matter of taking a few vitamin tablets. The fourth problem to be experienced is that, if and when the patient starts the megadose thiamine, the symptoms may get worse for an unpredictable time before they get better. There is no doubt in my mind that Flagyl is dangerous enough to be discontinued. This form of toxicity needs understanding by a physician who can take responsibility for its treatment.”

If you’ve suffered an adverse reaction to metronidazole, you’re not alone.  Learn more on my blog.  For victims of metronidazole toxicity or family members trying to find ways to help loved ones with the toxicity, join the Metronidazole Toxicity Support Group on Facebook (you need to answer a question to join).

If you have suffered from the side effects of this or others drugs and would like to share your story on Hormones Matter, contact us.

We Need Your Help

More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

Yes, I would like to support Hormones Matter.

Photo by Jr Korpa on Unsplash.

This article was first published on September 9, 2019.

 

Cipro and Flagyl Neurotoxicity in Brazilian Jiu Jitsu Athlete

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From Athlete to Barely Functioning

In 2016, I walked into the doctor’s office to be looked at for a stomach bug. I was prescribed Ciprofloxacin (Cipro) 500mg and 500mg of metronidazole (Flagyl), twice a day for 14 days. Within the first couple of days taking the antibiotics, I knew something didn’t feel right, but I continued to take them as prescribed.

Another day passed and I had a massive panic/anxiety attack. It felt as if my body was shutting down and I was going to die within a few minutes. After suffering all night long, I visited the doctor again and told him that it felt as though I was dying, that something was incredibly wrong and that I had never felt this way in my entire life.

He researched the side effects/symptoms of Cipro and Flagyl and based on what he read, he told me to stop taking it and see if there was any improvement.

I made it another few days before I couldn’t handle it any longer. My side effects were so bad. Less than a week after being off the pills, I went into work and was hit with another extreme panic attack. I couldn’t breathe again. I had extreme dizziness. It was like my body was shutting down. I told a coworker that I felt as if I was dying. I couldn’t walk and I needed him to call an ambulance immediately. From that point on, my life had changed forever.

In and Out of the Emergency Room

I had to stop working and I spent the next 8 months constantly in and out the emergency room. I went to multiple hospitals, saw multiple specialists, and my GP’s several times. I had several ECGs done, CT scans, ultrasounds, an MRI, and many rounds of blood work. Everything was negative.

I became delusional/depersonalized and suffered derealization. I was completely paranoid of life and in awe of my existence. I cried every single day.

I suffered with constant anxiety, severe panic attacks. I developed neuropathy with numbness in my arms and head and neuralgia with a sense of electricity in my brain or brain zaps. I developed tremors and body shivers. I felt hopeless, experienced intense fear and agoraphobia. I experienced tunnel vision and lost my vision to some degree. I had memory problems and was unable to concentrate. My dexterity declined and I lost the ability to walk or control my body properly. I developed high blood pressure. At times, I contemplated suicide. I was afraid of dying but also afraid of living.

I was prescribed Valium, a benzodiazepine, to calm my “anxiety”, even though I never had anxiety outside of it being chemically induced. This caused even more issues and I eventually had to stop taking it, no tapering involved.

It was like a bomb went off in my body and I have never recovered.

I still suffer from the following symptoms weak and shaken muscles and twitching, neurological symptoms dizzy when walking, extreme muscle pain tightness especially neck and shoulders, constant congestion, chest pain, chronic costochondritis, pins and needles in the hands and feet, and heart flutters especially at rest.

Prior to Cipro and Flagyl, I Was An Athlete

I had just turned 40 before all this happened and was high level functioning athlete. If I rewind 3-4 months before being given the Cipro and Flagyl, I had an accident on a job site, where some metal scratched my leg. I was given an antibiotic in case of infection, the name of which I cannot remember. That antibiotic started my gut symptoms that included reflux and so I was on Nexium for approximately 3 months. Those antibiotics gave me loose bowels and reflux etc. and that is when I went to the doctor and he prescribed me the Cipro and Flagyl. Since then, I have had fecal matter transplant done, which resolved over 90% of gut issues.

My diet was pretty clean and mostly protein and veggies. That is what it is now but probably even cleaner because of how aware I am of toxins, etc.

My energy before all of this was pretty good considering the output. I trained 3-4 days a week for approximately 1-2 hour sessions, plus worked physically 5-6 days a week. Although I would tire, it was nothing like it is now. I feel like I’ve run a marathon but have done nothing. I went from running 4 km just to warmup to not being able to walk within 2-4 weeks of taking Cipro and Flagyl.

I don’t smoke and only drink socially on occasion, a couple glasses of wine at most.

I’ve tried migraine medication, beta blockers, and vertigo drugs. All made me worse.

From holistic standpoint, I tried ozone. It helped marginally. I also tried an IR sauna saw some benefit but it also makes me worse if I go to hard.

Current Supplements

  • Omega 3s and high dose DHA
  • 400-800mg mag glycinate
  • ATP fuel 8 capsules
  • L Carnitine 800mg
  • Phosphorylcholine
  • Bitters, Quicksilver before meals – 2 squirts
  • Thorne B complex 12 – 1 cap twice a day
  • Researched nutritional glutathione 1/2 teaspoon – I do have glutathione deletion gene.
  • Hawthorn extract 3 tabs a day

I can’t really say if anything helping, as I still suffer from all these symptoms. I have recently discovered thiamine and begun supplementation. I have the glutathione deletion gene and also MTHFR. I am publishing my story for additional input.

We Need Your Help

More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

Yes, I would like to support Hormones Matter. 

Image by Julián Amé from Pixabay.

This story was published originally on April 26, 2021. 

Metronidazole Toxicity, Thiamine Deficiency, and Wernicke’s Encephalopathy

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Dr. Marrs and I recently had a book published with the title of “Thiamine Deficiency Disease, Dysautonomia and High Calorie Malnutrition”. I was therefore extremely interested to read one of the book reviews published on Amazon books by a patient who had suffered from what has become recognized as metronidazole toxicity encephalopathy (brain disease). Subsequently, she shared her full story with us. It is published here.

A Comparison of Flagyl Induced Encephalopathy and Wernicke’s Encephalopathy

This drug, sold as Flagyl, is prescribed to treat infections caused by anaerobic bacteria and protozoa. Uncommonly, it causes central nervous system toxicity that has the same damage configuration in the brain as Wernicke encephalopathy (WE). WE is the condition that occurs in the brain in people with severe thiamine deficiency. A manuscript in the medical literature was entitled “Metronidazole-Induced and Wernicke Encephalopathy: Two Different Entities Sharing the Same Metabolic Pathway?”  There seems to be little or no effort to explain it as a cause and effect relationship rather than seeing the two situations existing with different causes.

Debilitating Symptoms Post Flagyl

The reviewer states that she has, for two years, suffered with what she describes as debilitating symptoms due to a reaction from Flagyl. She states how these symptoms mysteriously wax and wane. On some days she barely notices them, but of extreme importance, she adds that a mild illness or physical exertion will cause the symptoms to reappear, forcing her back to bed for a variable number of days. When she was taking the drug, she lost his ability to walk and speak, but experienced a dozen other symptoms that persisted. These include difficulty in swallowing and breathing, constipation, severe anxiety, insomnia, depression, heart palpitations, chest pressure and several other unspecified problems. She mentions that she has a borderline enlarged heart.

I must point out here that these additional symptoms are surprisingly common in patients attending physicians in America, often classified as psychosomatic. It is the anxiety, insomnia and depression that guides physicians to thinking that the entire list of “inexplicable” symptoms is psychosomatic. Even the use of the word borderline for heart enlargement indicates that the physician could not identify the total symptomology. If thiamine deficiency had been considered as a diagnosis, the “borderline enlargement” would have fit because it is a cardinal sign of this deficiency.

The patient had evidently done some research on her own and had discovered that metronidazole is a thiamine antagonist. She also reported that in the medical literature metronidazole toxicity is constantly being compared with WE. When she came across our book, she had evidently experienced a flare up of symptoms and began to take supplements of thiamine and magnesium. She stated that the flare up calmed down much more rapidly than usual, enabling her to return to work and function in social activities.

She discovered that doctors do not believe in adverse drug reactions and will not treat the condition since they will not acknowledge that it exists. As a result, she has started a support group for people who suffer from this toxicity. Starting with three affected individuals, there are now over 100, all of whom have the same symptoms. Interestingly, they even warn new members how their doctors will react, preparing them for the reality of being dismissed by the medical community.

Thiamine Deficiency and Psychosomatic Disease

As mentioned in our book repeatedly, the multiple symptoms described by this reviewer are common in the offices of American physicians. “Real” diseases, according to the present medical model, are supported “by laboratory confirmation”. Because vitamin deficiency is generally considered to be nonexistent in America, it is only a physician, open to the possibility, who will entertain the laboratory studies required. The cause of many abnormal current laboratory studies performed on behalf of a sick patient is often obscure. None are capable of identifying vitamin deficiency. When positive as a result of the biochemical changes induced in the body by the deficiency, they are ascribed to other conditions that are acceptable to the present medical model. Hence, the diagnosis of psychosomatic disease often rescues the physician from a failure to recognize his own ignorance. It has always seemed to me that blaming the patient for imaginary symptoms without thinking of the brain as an electrochemical machine represents a glaring deficiency in diagnostic perspective. Unfortunately, nutrition has for long been a neglected area of medical teaching and there are extraordinarily few physicians in practice who recognize its vital importance. What is even more important is the recognition that many drugs are capable of precipitating something as bizarre as thiamine deficiency.

Stress and Illness

I mentioned above that it was extraordinarily important for the reviewer to recognize that flare ups of symptoms occur following a mild illness or physical activity. To explain this, I turn to the teachings of Hans Selye, one of the early researchers in the effect of stress as a causative agent in precipitating disease. Stress must be defined as any environmental factor that imposes a necessity for an animal to adapt (resist). Just like a car that climbs a hill, energy requirement must increase to meet the demand. Mental stress is often more energy requiring than physical stress, explaining the breakdown of health that may follow divorce proceedings. Selye had recognized in animal studies that virtually any form of physical or mental stress imposed the requirement of some form of energy in the ability of the animal to adapt. This was pure genius because energy metabolism was largely unknown in Selye’s time. Modern biochemistry has unraveled a lot of its complexities and thiamine stands out as an absolute necessity in the production of energy. Adapting means that the animal being physically stressed in many different ways would be capable of maintaining a state of health. Failure to meet the increased energy demand was marked by many observed performance and biochemical changes commensurate with those seen in sick humans. One of Selye’s students had reproduced in thiamine deficient animals exactly the same manifestations as those caused by physical stressors.

Diseases of Adaptation or Maladaptation?

The conclusion must be obvious. Any form of mental or physical stress induces a complex reaction in the organism that requires a large amount of energy to run the necessary adaptive machinery. In fact, Selye had concluded that illnesses in human beings were what he described as “the diseases of adaptation”. Since it is a failure to furnish the necessary energy, I suggest a refinement by calling them “the diseases of maladaptation”.

A healthy diet is designed to meet the calorie and non calorie nutrients that fully enable the body to synthesize energy. If this capability fails to meet the demand, even under extreme environmental conditions that permit life to continue, disease follows. The weakness may be genetic or nutritional in character or the stress overwhelming. For everyday life, all three factors are in play continuously.

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Metronidazole: The New Mitochondrial Nightmare

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When “Rare” Happens to You

On June 13, 2015, I lost the ability to walk and speak. These symptoms came on suddenly, and were accompanied by hand tremors, shortness of breath, weakness, difficulty concentrating, and dizziness. My mother drove me to the ER, but despite my deteriorating condition, I was confident the problem had a simple solution.

I’d been taking the antibiotic, metronidazole (Flagyl), for c diff (a gut infection). When my symptoms abruptly manifested, I looked the drug up online and, sure enough, all of my symptoms were listed as side effects of the medication. So my mother and I thought this would be easy, that the trip to the ER was a mere “technicality” for me to be put on an alternative antibiotic.

When it comes to having an adverse drug reaction, I would learn the hard way that things are never easy. What followed were six weeks where I could not care for myself. While a few symptoms diminished after discontinuing the medication, others randomly popped up to take the stage, this jumble of problems that didn’t seem to connect to one another:

  • Difficulty swallowing
  • Frequent urination
  • Constipation
  • Asthma-like respiratory issues
  • Complete loss of appetite (twenty pound weight loss)
  • Inability to stand up straight
  • Difficulty walking
  • Shortness of breath when talking
  • Chest pressure
  • Heart palpitations
  • Face flushing
  • Dry mouth
  • Cough
  • Headache
  • Pressure at the back of the head
  • Neck pain and stiffness
  • Constant adrenaline rushes
  • Anxiety
  • Depression
  • Crying spells
  • Insomnia
  • Extreme fatigue

I was the medical version of a Picasso painting. Nonetheless, there was one connection between these symptoms; they’re listed as side effects of metronidazole.

The Google Patient

During those first two months, I went from the patient who sees her doctor once or twice a year, to the compulsive consumer, calling several times a week, setting up appointments, and being put through the ringer of medical exams.

In total, I saw eight general practitioners, including my primary care physician, and almost every specialist known to medicine: a cardiologist, an immunologist, a pulmonologist, an ENT doctor, a psychiatrist, and a psychologist. There were tests, from multiple CT scans to X-rays, EKGs, an upper GI, an echocardiogram, a heart monitor, a laryngoscopy, several lung function tests, and about 30 vials of blood taken.

I insisted the cause of my symptoms was the metronidazole, but no one listened. After two months and no answers, my primary care physician handed down the diagnosis of depression and an anxiety disorder. That was the moment I lost faith in the medical community.

So I did the thing that doctors hate—I Googled. A lot. Medical literature is a language all its own—a new version of Pig Latin, MD edition—and I didn’t know what to search for, what the magical keywords were to unlock the “prize.”

Eventually, I ran across another group of people suffering from an adverse drug reaction—the floxies.  This group of patients had suffered an adverse reaction to another type of antibiotics called fluoroquinolones and, as I read their stories, I was horrified how their experiences mirrored my own, including their doctors usually dismissing their claims about the drugs. There were numerous blogs, YouTube videos, local media coverage, books and medical literature about their condition.  Fluoroquinolone antibiotics can directly damage mitochondrial DNA (the energy source of our cells), and people who suffer from this can become permanently disabled or even die. The effects are systemic, with certain regions of the body like the tendons, the heart, and the brain especially affected.

They called it “getting floxed,” and said they suffered from “fluoroquinolone toxicity.”  Reading this phrase, I plugged the words “metronidazole toxicity” into Google.  The answer I’d been searching for flashed on the screen.  What I had, it had a name:

Metronidazole-induced Central Nervous System Toxicity

If you lose the ability to walk and speak while taking metronidazole, there’s a 93% chance lesions have formed on the back of your brain, specifically the cerebellum, followed closely by the brain stem and then the basal ganglia. The effects cause motor control issues, seizures and an “altered mental state.”

From Patient to Blogger

Upon finding numerous pieces of medical literature to back up my claim about metronidazole toxicity, I presented the information to my primary care physician. When I tried to set up another appointment a short time later, she banned me from her clinic. It took a meeting with her supervisor and the clinic’s Risk Management to receive the proper diagnoses on my records—cerebellar dysfunction and altered mental state.

My ban from the clinic was never retracted.

At this point, it became clear that, not only did the medical community not have a way to treat an adverse drug reaction like metronidazole toxicity, they refused to even acknowledge it existed.

Nonetheless, the diagnoses didn’t fully explain my symptoms. There were others, like heart palpitations (including irregular blood pressure), constipation, dry mouth, loss of appetite, difficulty swallowing, and breathing issues that just didn’t match with cerebellar dysfunction.

Over nine months, my condition had greatly improved. I was able to work and enjoy social activities again, but some lingering symptoms would still randomly “flare up,” either due to over-exerting myself, an illness, allergies, or for no reason at all. I used to be an avid biker and that was no longer possible.  There were times, when a flare up would be too great, that I’d end up back in bed.

I decided to take the medical literature on metronidazole and create an online blog for others who might need answers. In addition, I started a support group on Facebook for metronidazole victims; when it began, there were three of us.  A year and a half later, there’s over a hundred, and counting.

Each of us have different issues, but almost all of them fall into four categories:

  • Cerebellar dysfunction (dysfunction of the cerebellum)
  • Autonomic dysfunction (dysfunction of the brain stem)
  • Altered Mental State (neuropsychiatric issues)
  • Polyneuropathy (damage to the nerves throughout the body)

Despite metronidazole’s ability to damage the brain stem, there’s little medical literature connecting metronidazole to autonomic dysfunction. The autonomic nervous system controls all the “automatic” operations of the body, like heart rate, breathing and digestion. As I listened to various stories from other patients that matched my own about uncontrollable heart palpitations, irregular blood pressure, dry mouth (dysfunction of the salivary glands), digestive issues, asthma-like respiratory issues, irregular sleep patterns, swallowing issues and the like…it became clear that this was the final puzzle piece to the metronidazole mystery.

Some patients have recovered as well as I have or better; others are disabled and housebound.  Almost everyone has flare up’s, months or years after taking the drug. Some people have full relapses and worsening symptoms long after they took metronidazole.

So the question keeps being asked—why? Why are these symptoms still here so far out from taking this drug?

Metronidazole and Thiamine

It was November of 2017 that I had the biggest flare up in two years. I had begun a second job on the weekends to get some extra cash for the holidays. My symptoms had remained steady for well over a year at that point, with only mild flare up’s. By the second weekend of work, my condition worsened, with symptoms that I thought were long-gone returning in full force. Heart palpitations, weakness in my legs, difficulty breathing, dizziness, brain fog, chest pressure, and even the anxiety came roaring back. On top of these, two new symptoms developed—pain in my hands and feet, and ringing in my ears. I had to quit the seasonable job, and, with the exception of going to my full-time work, I stayed mostly in bed for weeks.

At this time, I happened upon Dr. Lonsdale and Dr. Marrs’ new medical textbook, “Thiamine Deficiency Disease, Dysautonomia, and High Calorie Malnutrition.”  The title caught my eye because I vaguely recalled, through my metronidazole research, the word “thiamine” had popped up multiple times. So I bought the book.

Everything I had experienced was listed within its pages. Thiamine (aka vitamin B1) is essential for oxidative metabolism. It is the gatekeeper of our mitochondria and, without it, the cells cannot properly convert food into fuel. In addition to this, without thiamine, oxygen cannot be properly utilized, causing our cells to—for lack of a better word—suffocate.

This suffocation (called “pseudohypoxia”) leads to our autonomic nervous system to activate its “fight-or-flight” response, which causes extreme anxiety, insomnia, emotional instability, a heightened sensitivity to stimuli, and an overall lowering of our stress threshold. In addition to these symptoms, there is a paradoxical one; the body is not designed to run on its fight-or-flight response for days or weeks on end. This over-use of the body’s energy reserves results in extreme fatigue.

Thiamine is found all over the body, but there are places where its use is concentrated, the brain being the most crucial, followed by the heart and our nerves. When there’s a deficiency, dysfunction typically hits the back of the brain the hardest—specifically the cerebellum and brain stem. Lack of thiamine causes:

  • Cerebellar Dysfunction
  • Autonomic Dysfunction
  • Altered Mental State
  • Polyneuropathy

After reading Dr. Lonsdale and Dr. Marrs’ textbook, I went back to all the medical literature I had pulled about metronidazole toxicity (and then some). It turns out, metronidazole and thiamine are antagonists; the drug inhibits thiamine from being absorbed into the body, which can plummet the victim into deficiency. The chemical structure of metronidazole is similar to that of the third ring within thiamine’s chemical structure; when the body mistakes metronidazole as this third ring, it turns thiamine into “thiaminase”—an inhibitor of thiamine.  This is called “thiaminase poisoning,” and it plummets the body into deficiency.

The symptoms of thiamine deficiency and metronidazole toxicity are identical.

Theoretically, the reason patients cannot recover from metronidazole toxicity adequately is because they never restore their thiamine after discontinuing the drug. The deficiency is too great to recover from by simply eating thiamine-rich foods; it requires high-dose supplementation over months to resolve the underlying problem. Therefore, victims of this toxicity are, at best, skating on the edge of this deficiency, and when a stressor enters our lives—illness, work, exercise—we exhaust the limited thiamine we have.  We plunge back into deficiency and the neurological symptoms manifest once again.

To conventional medicine, thiamine deficiency is considered a relic of the past—something that belongs in history books like scurvy—and rarely happens in the industrialized world. But there is one modern-day condition that is still being recognized by the medical community—Wernicke’s encephalopathy. This is an alcohol-induced thiamine deficiency that causes lesions to form on the back of the brain, specifically the cerebellum and brain stem.

In medical literature, metronidazole toxicity and Wernicke’s encephalopathy are constantly being compared because their symptoms and presentation of brain lesions are almost exactly the same.

Metronidazole and the Floxies

It all comes down to the mitochondria. For two years, I’ve read various stories and spoken directly with dozens of victims of metronidazole toxicity. Many times, they have commented about their symptoms being similar to that of the floxies, with several of them even stating that they’ve been “floxed.”  I’ve corrected them, explaining that metronidazole is in a different class of antibiotics and, while it causes damage to the brain, there’s no significant medical literature proving that it causes mitochondrial damage.

Nonetheless, as I’ve read numerous accounts from the fluoroquinolone community, I couldn’t help but note the similarities in our neurological symptoms.  Metronidazole victims don’t have the ruptured tendons…but the polyneuropathy and central nervous system effects (including psychiatric effects) are indistinguishable.

One website I focused on during my metronidazole toxicity research was askapatient.com. It houses one of the largest collections of customer reviews on the internet for medications, and metronidazole/Flagyl is the most reviewed drug on the site.  It also has the 5th highest number of 1-star reviews (Cipro and Levaquin are 1st and 2nd).

I compared metronidazole and its central nervous system side effects to that of those two popular fluoroquinolone medications from reviews between 2000 and 2015, totaling the number of reviews complaining about CNS symptoms:

Reviews Metronidazole Cipro Levaquin
Total # of Reviews 3312 1828 2032
Total # 1-star Reviews 1246 1352 1432
Dizziness 733 200 246
Fatigue 471 206 144
Anxiety 556 281 229
Panic Attack 180 95 65
Depression 641 185 152
Confusion 155 53 69
Disorientation 96 20 19
Paranoia 76 26 38
Headaches/Migraines 837 263 209
Suicidal Ideation 33 47 36
Numbness 157 121 119
Burning Sensation 51 151 133
Tingling Sensation 225 130 120

If metronidazole toxicity is caused by thiamine deficiency, then this deficiency is causing mitochondrial dysfunction and possible damage. And since thiamine concentrations are highest in the brain—specifically ,the cerebellum and brain stem, which is also the highest in mitochondria—this means that metronidazole is ultimately causing the same CNS issues as the fluoroquinolones.

Essentially, people with metronidazole toxicity are getting brain-floxed.

Can Something Be Done for Victims of Metronidazole? What I Have Learned

Unlike those who suffer from fluoroquinolone toxicity, those with metronidazole toxicity might have one advantage—our mitochondria haven’t been damaged directly by the antibiotic. Because it is a thiamine deficiency that is, in theory, the true culprit in this crime, it might be possible for victims of metronidazole toxicity to have a relatively clean-cut treatment plan.

Dr. Lonsdale and Dr. Marrs explain in detail about thiamine deficiency in their textbook, including the condition’s history, its symptoms and how they’ve implemented this information into action for various patients with documented case studies. If you believe you’re suffering from thiamine deficiency, reading this text would be the first big step in your treatment plan.

Depending on your level of deficiency, you will need to decide what works best for you. To sum up, there are several versions of thiamine to pick from; thiamine mononitrate and thiamine HCL are readily available at pharmacies and health food stores. Because they are water-soluble versions of thiamine, it is difficult to overdose on them; however, if you have severe or chronic thiamine deficiency, their benefits might be limited due to their short time span in the body and their inability to penetrate the cell without a protein transporter (making the absorption a little more complex).

Other versions may only be available for purchase online, but they cut out that “middle man.”  Allithiamine is naturally derived from garlic and is a fat-soluble version of thiamine. Because it is fat-soluble, the body stores it longer and it works better on the central nervous system and nerves.  Benfotiamine is another fat-soluble version, synthetically made, and works well on nerves but not the brain.  Lipothiamine has similar effects as Allithiamine, but is synthetically made.

You must supplement magnesium with thiamine. These two nutrients go hand-in-hand; thiamine supplementation will not work without magnesium. One option is Natural Calm Magnesium Powder that dissolves in water; you can control your dose of magnesium easily. If you notice loose stools, cut back. It’s available at several health food stores like The Vitamin Shoppe and online.

As the book details, patients who are severely and/or chronically deficient might need to “megadose” on thiamine before they notice improvements. If you feel you need to megadose, it would be a good idea to be monitored by a physician. Integrative physicians are more likely to support nutritional therapy than conventional doctors. Because this is new medical knowledge, you will probably have a lot of “trial and error” before finding the right type of thiamine and dosage that helps your condition and it could take months before treatment starts to work if you have a severe or chronic case. Do not begin by megadosing, however—start small and work your way up.

Thiamine has limited side effects, but they can happen, as can allergic reactions at high doses. If you are severely deficient in thiamine, there’s a good chance you’re deficient in other nutrients and taking thiamine might make those deficiencies more apparent. You could also have a “paradoxical” effect at first, as your cells have adapted to not having adequate thiamine (this is actually a good sign, as it confirms your body is no longer well-adapted to thiamine due to deficiency).  The paradoxical effect is temporary, but if you feel uncomfortable, scale back to a smaller dose and then work up from there.

One issue that could arise with high doses of thiamine over time is an imbalance of the other B-vitamins. However, this works both ways. If you are deficient in thiamine, then taking high doses of other B-vitamins right now could further imbalance your thiamine. After speaking with patients suffering from metronidazole toxicity, one misdirection is to take high doses of vitamin B12 (some even get injections).  This seems to result in worsening of the toxicity symptoms. Eventually, you’ll want to supplement other B-vitamins to keep everything in balance, especially if you wish to megadose on thiamine for a longer duration.

Unfortunately, there is no clinical trial for me to point when it comes to metronidazole toxicity and thiamine. It is taking medical literature from one side of the spectrum and connecting it to the other side.

I started taking thiamine mononitrate about two weeks after my major flare up began, 100 mg’s.  It did nothing, so I doubled it to 200mg. After two days, I started to feel better. I switched to thiamine HCL, 300mg, after another week and, again, noticed improvement. After reaching 600mg, I switched to Allithiamine at 50mg. I had a slight “paradoxical reaction” the first day, with anxiety and shortness of breath that dissipated quickly. Now, I’m at 200mg of Allithiamine, and my flare up has gone from debilitating to mild.

I still have a long way to go, but for the first time in two and a half years, it finally feels like my health is curving in the right direction.  There is a light at the end of this very long tunnel. Just like me, if you feel you suffer from metronidazole toxicity, then there might be something you can do about it.  There might be hope in treating your symptoms. Please be advised, however, I am not a physician and this post does not constitute medical advice. It is simply what I have learned over the course of my illness. To treat your illness, you will need to educate yourself, learn everything you can, and work with a physician.

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Image credit: Pablo Picasso, Weeping Woman under creative commons license.