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Flagyl and Nausea: What Users Say (Page 3)

Reviews for Flagyl

Commonly mentioned side effects
  • Pop...
  • Taken for less than 1 month
  • September 22, 2015

For Trichomoniasis "Was put on Flagyl 500 mg twice a day for one week. Tomorrow morning is my last pill. Had no clue about this antibiotic. 1st pill was taken on an empty stomach, and I put the pill on the front of my tongue... big mistake! Was very aware after that what I had to do... place pill as far back as you can and drink water, fruit punch as fast as you can, on a full stomach! I constantly feel like I'm carsick, off and on headaches, some anxiety, and just an overall disconnected feeling. But... I have to admit it really works!"

10 / 10
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  • Anonymous
  • Taken for less than 1 month
  • May 19, 2017

For Helicobacter Pylori Infection "I am now on day 7 of a 14. I'm on metronidazole, omeprazole, and clarithromycin. I have had H. pylori 3 times within a year. The treatment for me has been awful. The dosage was tripled, and it has given me nausea, bloating, foggy memory, a white film on my tongue, and fatigue. The metallic taste lasts all day. The thing that you need to be aware of is if you continue to get H. pylori like I have, it can be a precursor to stomach cancer. After this round of treatment, I have taken the steps to see a gastroenterologist to insist that he does an endoscopy to ensure me that there isn't anything for me to be concerned with at this time. It's a very scary feeling to have gotten this infection at least 3 times within a year."

7 / 10
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  • Pie...
  • December 21, 2016

For Bacterial Infection "Ok, so I didn't know what was going on. This medicine has totally changed. My side effects are nausea, lower back pain every time I stand, mouth taste blah, and tired. Oh, gas and diarrhea. I'm so glad tomorrow is my last day. The best advice I can give is to eat heavy."

7 / 10
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Frequently asked questions

  • Mel...
  • Taken for less than 1 month
  • November 27, 2019

For Bacterial Infection "Coming off a long bout with diarrhea (unknown causation). Very run down with constant diarrhea, but it was slowing. Developed a UTI, and the doctor prescribed Flagyl. Lots of warnings about alcohol and mouthwash. Took one tablet and became nauseous. Started vomiting. Today (second day), nausea and vomiting continued. Dehydrated and went to the ER for rehydration, anti-nausea IV, and a prescription for a new antibiotic. Still can’t take the new antibiotic because it must be taken with food, and I can’t keep any food or liquid down (11 pm, second day). Anti-nausea meds (Zofran) slow to kick in because, as the nurse explained, Flagyl (1 tablet) is still in my system. Flagyl may be fine, but be very careful. If you are prone to nausea or seasickness, or just don’t trust your tummy, do not take this. Ask for another antibiotic. Even the pharmacist, after hearing of my experience when my husband filled prescriptions today, commented that Flagyl is wretched on the stomach."

2 / 10
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  • Anonymous
  • March 12, 2010

For Bacterial Infection "I've taken Flagyl several times for severe sinus infections. It did help considering the side effects. Currently, I began Flagyl 5 days ago 3 times a day for C. diff. The C. diff symptoms were bad enough, but the side effects this time are horrible. Severe nausea, insomnia, itchy hot skin, and a general feeling of sickness. I still have 5 more days to go and want to discontinue the medicines."

4 / 10
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  • Cd4...
  • June 13, 2017

For Bacterial Infection "Was prescribed Flagyl for BV but was never entirely sure I even had it as no tests were conducted. Took the pills and am so happy tomorrow is my last day! Literally the worst side effects ever, day one wasn't so bad, just had a metallic taste in my mouth, but every other day I've experienced headaches, nausea, and extreme fatigue to where I'm sleeping all day. The medication is so much worse than the slight issues I even had."

1 / 10
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  • Jan...
  • October 17, 2015

For Bacterial Infection "After intercourse with my boyfriend (no condom), I developed a strange odor and unusual discharge. I knew it wasn't the same as my usual discharge. I went to the doctor and was diagnosed with BV (I feel like I actually had trich, but apparently it's hard to test for that, so BV it was!) I took this medicine after trying to treat it with probiotic and vitamin C ovules to no avail. I did experience very mild nausea and softer stool, as expected with antibiotics. By the end of the week, wasn't sure it was 100% gone because after I finished the course of Flagyl, my period came, and I was scared that the BV would come back, as other ladies have experienced. Luckily, everything was still back to normal despite my period. So far, I've been BV-free for 3 weeks. It was clear that this infection was caused by sex and not by any internal imbalance, so hopefully it will stay away. I learned my lesson to always, always wear condoms because this problem is gross to have. I also now take daily probiotics, which is great support for our bodies. So glad it's gone. I pray that all you ladies will find a cure if this hasn't worked for you!"

10 / 10
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More FAQ

  • ash...
  • July 24, 2013

For Bacterial Infection "I really don't understand all the negative reviews for this medicine. I've been on it for three solid days now and have had absolutely no issues. I'm taking 500 mg, one pill twice a day. I've been taking it after lunch and dinner and haven't had any issues with diarrhea, nausea, or dizziness. As for people complaining about the taste of the pill, how are you even able to know what it tastes like? It should be in your mouth for less than a second, just swallow it down with a glass of water or some orange juice."

10 / 10
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  • Anonymous
  • July 31, 2019

For Bacterial Infection "Flagyl also ruined my life. I was healthy and now I have panic attacks and muscle weakness. Only took 2 days' worth, but three weeks later still feeling like someone else. Dizziness and nausea. Be careful with this."

1 / 10
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  • dra...
  • Taken for less than 1 month
  • April 27, 2015

For Clostridioides difficile Infection "Took 500 mg 3 times per day for 14 days to treat a C. diff infection. Within the 1st week, the side effects kicked in. Horrible taste in my mouth 24/7, then followed by constant nausea and loss of appetite. I was so nauseous by the end that I couldn't get off the couch. Took it with meals, and I haven't had an alcoholic drink in 3 years. Chewed gum all the time to deal with the taste. Horrible side effects, but very effective. Was feeling normal again within a few days of starting it."

9 / 10
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  • Tum...
  • Taken for less than 1 month
  • July 8, 2019

For Bacterial Infection "This is my third time with diverticulitis and have taken Flagyl and Cipro combo each time. I'm currently on day 7 of the course, and it has relieved the pain early on each time. So for that, it is highly effective. The downside is that you can't drink alcohol. It also leaves a terrible metallic taste, as well as dry mouth, which is hard to deal with and annoying to say the least. Slight nausea from time to time as well."

7 / 10
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  • Ret...
  • Taken for less than 1 month
  • December 10, 2022

For Giardiasis "It was such a relief to get a diagnosis of giardiasis instead of something worse that I was happy to accept a 10-day treatment of 500 mg/3x day Flagyl. As a retired RN, I knew it could be bad, and it was! Dizziness, metallic taste in my mouth, stomach pain that differed from the one Giardia was giving me, headaches, nausea, sleep disruption, random itchy spots, foul-tasting heartburn - full range of side effects. HOWEVER, I am still so grateful to have something to get rid of my parasites after suffering with them for 3 months that I just dug in and took the 10-day treatment with gratitude. It's been rough, and now at the end of the treatment, I am focusing forward on healing my GI system and getting back to normal."

10 / 10
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  • Alb...
  • December 11, 2017

For Bacterial Infection "This drug almost killed me. I took 400 mg twice a day for 5 days. The first day was okay. The second day, I experienced stomachache, agitation, insomnia, nausea, hallucination, and nightmares. The third day, I rushed to the hospital with blurred vision, which lasted for over 11 hours. Never again."

1 / 10
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  • smo...
  • Taken for less than 1 month
  • June 1, 2016

For Clostridioides difficile Infection "Absolutely awful side effects. First, the dark urine color (not really a problem, but bizarre), then the fatigue, the nausea, the total loss of appetite. I was on this for 10 days for a C. diff infection (caused by clindamycin... AVOID CLINDAMYCIN), and I lost ten pounds. I had to force food down my throat just so I wouldn't wither away, and I could barely get out of bed. Took care of the worst of the C. diff, but not all of it. I still have a C. diff culture in my gut 6 months later."

3 / 10
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  • Anonymous
  • Taken for less than 1 month
  • October 25, 2019

For Bacterial Infection "I was prescribed Flagyl for 7 days, 3 times a day. It is awful, this medicine has kept me with a headache, nauseated, and vomiting. Today is number 6, and I'm dreading the last day. I just want to be normal again!!"

1 / 10
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  • Anonymous
  • Taken for less than 1 month
  • March 19, 2013

For Bacterial Infection "Before I started this medicine, I was so worried because of all the reviews about bad side effects. I can honestly say I did not have a bad experience at all. I was on 500 mg twice a day for 7 days. The 2nd day I was on it, I had very slight nausea in the evening, but I started watching T.V., and when the show was over, my nausea was gone. The 3rd day, I had some wine, and I was on my 2nd glass when I remembered I'm not supposed to drink while on Flagyl. I just finished my last dose and haven't experienced any more nausea or anything. I've been lethargic the last 2 days, but that may be due to getting my period. Not everyone has a bad reaction!"

9 / 10
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  • KCa...
  • Taken for less than 1 month
  • June 26, 2018

For Diverticulitis "I took this for a diverticulitis abscess for ten days. I do not handle antibiotics well. I found with this one you definitely need to eat something with it. If I didn't, my stomach would hurt. Mild diarrhea, tolerable. Some nausea. Otherwise, no problems."

9 / 10
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  • Boo...
  • June 7, 2015

For Bacterial Infection "This medication worked wonders! I was a little skeptical about it from doing research, but with anything you Google search, if you dig around long enough, you will eventually find something scary. I have had no diarrhea while on this medication, as some of the complaints were mostly about diarrhea, nausea, headaches, and cramps. Let me tell you, drink PLENTY of water! Don't drink soda, tea, punch, etc. I mean straight-up water! I also picked up Kefir; it's a cultured low-fat milk smoothie. It will do wonders for your stomach! I also took Zantac 150 mg 30 minutes before taking the Metro pill. The only side effect I have had was a tender tongue under my chin. P.S. If your urine is dark (a common complaint by most), you need more water, people! Hope this helps you!"

8 / 10
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  • chj...
  • December 9, 2009

For Bacterial Infection "I was prescribed this for my bacterial vaginitis infection about 2 weeks ago. I had the one dosage (4 tablets) treatment. The pills taste horrible. I experienced nausea, good thing I took them before bedtime. My infection cleared up, but now I think I have a yeast infection, or it's just vaginal itching and discharge, nothing smelly, so I know it's not an infection. I'm guessing it's a side effect of the pills, besides that, they're really good!"

9 / 10
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  • kar...
  • June 17, 2016

For Bacterial Infection "This wasn't right for me. Only was on it for 5 doses, so I don't know if it helped. I puked up the fifth dose, then got dizzy and almost passed out on the ride to the ER. It settled down after a couple of hours. Had no alcohol for the past 10 days. This likely wouldn't happen to most people. But it's got gnarly side effects if it doesn't agree with you."

1 / 10
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  • Lor...
  • March 17, 2017

For Clostridioides difficile Infection "I have ulcerative colitis, and I tested positive for C. diff and was put on Flagyl - 500 mg 4x/day. The first 5 days I could function, although I had no appetite and was dizzy and nauseated. The last 6 days I was bedridden with nausea and vomiting, an aversion to food, dizziness, and the skin on my legs went numb. It's been a week now, and the skin on my legs is still numb, although it doesn't affect my mobility. I don't want to eat anything still, but the food doesn't come back up now. However, all the symptoms of C. diff are gone. It seems to have calmed down the UC as well. So yes, it worked very well so far, but the side effects for me were horrendous."

9 / 10
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  • Geo...
  • Taken for less than 1 month
  • June 11, 2019

For Bacterial Infection "I only took it for 2.5 days. The adverse reaction was horrible: severe nausea, the worst taste in my mouth, and headache. Lasted for over 2 weeks. I ended up in the ER because of this medicine. I would never take it again."

1 / 10
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  • med...
  • Taken for less than 1 month
  • July 27, 2015

For Bacterial Infection "I went on a holiday to Thailand and developed a bloated stomach with wind and later diarrhea. The doctor prescribed Flagyl to kill any bugs in the intestine. We know that in these countries it is rather easy to get a bug from foods. After many trips, I finally got a Bangkok belly. After taking 400 mg three times a day, I felt some relief the next day. Felt good. Then the next day, I woke up feeling terrible. I had sneezing, a runny nose, a feeling of tightness in the nose (harder to breathe), asthma, dry lips, rashes on the hands, body aches, lack of appetite, feeling lethargic and tired, along with wind in the stomach and slight nausea. Diarrhea was almost gone. Most side effects were happening to me on the fourth day."

7 / 10
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  • Val...
  • Taken for less than 1 month
  • October 13, 2019

For Bacterial Infection "This is the final day of my 10-day prescription of Flagyl 750 mg x3 daily for a parasite infection, and over the last nine days, this is what I have been experiencing: - Bad or metallic taste in the mouth. - Nausea. - Little fatigue. - Moody. - A few bloating periods. - 8th and 9th days frequent diarrhea. I don't know if the parasite infection is still there, nor what to expect after the dosage. Would love to hear feedback from someone in a similar position. Thanks."

5 / 10
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  • Cin...
  • Taken for less than 1 month
  • July 30, 2019

For Bacterial Infection "Yesterday, I finished 5 days of twice daily 400 mg of Flagyl. If my husband wasn't with me, I would have despaired. Horrible nausea, heartburn, pain, chills, swollen face, knees, and feet. No sleep in 3 days. It was up there with heroin withdrawal. Seriously, been there, done that. Flagyl was a BEAST. One day later, much better, but not out of the woods. Hopefully, my BV has gone. This sucked. I took it with food, horrible metal mouth, ew. Still felt steamrolled. Hopefully, anyone reading this has no bad side effects. I advise asking family or a friend to help, as I could barely walk. Oh, and weird red patches, pinprick weirdness. User beware. Hope your body responds better than it did with mine."

6 / 10
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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.