Skip to Content

User Reviews for Metronidazole to treat Diverticulitis

Also known as: Flagyl, Metro, Flagyl IV, Flagyl 375, Metro IV

Metronidazole has an average rating of 6.5 out of 10 from a total of 195 ratings for the treatment of Diverticulitis. 47% of those users who reviewed Metronidazole reported a positive effect, while 20% reported a negative effect.

Metronidazole Rating Summary

6.5/10 average rating

195 ratings from 230 user reviews.

Compare all 20 medications used in the treatment of Diverticulitis.

10
15%
9
13%
8
18%
7
14%
6
7%
5
9%
4
4%
3
4%
2
4%
1
12%

Reviews for Metronidazole

RM April 27, 2021

“Nasty diverticulitis off and on for 20 plus years.....2-3 times per year. Flagyl and Augmentin work fine, take about a week to get back to normal. However, in last few years flagyl causes significant dizziness after 4 days ...... really like being very drunk. Plus, it now causes terrible tinnitus. I suspect I have just taken too much over the years (PS I am a doctor). I will look around for an alternative.”

9 / 10
Was this helpful?YesNo
Beegee March 19, 2021

“Metronidazole or Flagyl is very powerful. I have diverticular disease, and the alternative is surgery from flare ups. While I probably will get surgery later on, this is the go-to drug before. It happens between 2-4 times every year, and I know what it feels like when slight cramping and urge to go then escalates to straight up sharp pain within hours. Long story short, this drug is not pleasant. It leaves a metallic/bitter aftertaste in your mouth for the two week duration you are on it, it takes a few days AFTER ceasing the treatment for that to end. But otherwise, it is doing its job. The gas, bloating, cramps, and diarrhea are all symptoms of diverticular disease, not necessarily this drug. This drug is the solution, and it is a powerful one. It is not pleasant, but it works and its cheap. That's my experience using for the past decade with this terrible disease, this drug has kept me off the operation table so far, and I'm hoping it can extend that for several more years until I have no choice.”

10 / 10
Was this helpful?YesNo
Hero February 23, 2021

“suddenly I felt horrible pain inside my colon, I went to the hospital and they made CT scan and doctor diagnosed me with diverticulitis. This was 6 days back and he prescribed Ciprofloxacin and metronidazole for 10 days at the third day I was feeling no pain but suddenly I began to feel nausea, severe dizziness, irritability, severe shaking and rapid heartbeat. I went to ER and spent more than 7 hours there taking pain relievers and they did many blood tests and all were fine. Doctor advised to continue the same for complete 10 days”

7 / 10
Was this helpful?YesNo

Frequently asked questions

1234 March 28, 2020

Flagyl (metronidazole): “Please DO NOT take Flagyl. This is a lethal drug that will mess your body up for months. I was given this for diverticulitis. I was asked to take Flagyl for 7 days. By day 2 I was already in pain with side effects with bad muscle cramps especially my legs. I kept going not realizing the damage it was doing. On day 6 I gave up. The side effects were unbearable. I was taking regular pro-biotics during this period and after. Flagyl wiped my gut clean to the extreme that I kept getting urine Infections / Cystitis (inflammation of the bladder) for weeks after. The constant urine infections / Cystitis continued for the next 5 months. Eventually when I saw my naturopath, he gave me a special blend of flora (pro-biotics) to help restore my gut back to normal. I don't know why doctors are allowed to prescribe this drug as it should be banned.Please avoid taking this drug.”

1 / 10
Was this helpful?YesNo
Mary August 27, 2019

Flagyl (metronidazole): “First diverticulitis (DVT) attack, was in such pain & had been in a very stressful situation. I had CT and diagnosed with DVT and prescribed flagyl & cipro. Became very ill, nauseated, headache, confused, lost my way back to husband's hospital room. Very frightening & debilitating. Called former GI dr & he took me off 1 of the drugs & I slogged it out & finally got well again but at what cost? I'm 1 that get frequent flare ups. Now take 250 mg amoxicillin 3X day for 10 days which is very inexpensive & have no side effects. Nothing to compare to the horrible , torturous side effects of those other 2 drugs. I sought advice from 3 GI drs, and consulted 3 colorectal surgeons. It is hard to imagine that they still do not really know what causes these DVT flare ups. It's all best guess & try this or try that. With so many people suffering from DVT I can't find a major study being conducted to ID any specific bacteria that seems to get out of hand causing these repeated infections.”

3 / 10
Was this helpful?YesNo
Jb · Taken for less than 1 month April 24, 2020

Flagyl (metronidazole): “Was prescribed flagyl for possible diverticulitis, took it for two days and could not take it anymore. It caused me to have severe diarrhea, fever, severe flu like symptoms, made me very weak, had to stop taking it. Will never take it again.”

1 / 10
Was this helpful?YesNo
Sammy · Taken for less than 1 month December 11, 2019

“This metronidazole medication wrecks me as bad as the diverticulitis, but they work. Day 3 of severe attack and pain is a bit better, but today started with diarrhea. I'm starting to think IBS and Diverticulitis are quite connected , anybody feel the same way?”

Was this helpful?YesNo

More FAQ

Anonymous · Taken for less than 1 month August 20, 2020

“Taking Metronidazole 500 mg with Ciprofloxacin twice a day for diverticulitis. Day 3 and worse than the disease itself. Dizzy, not sleeping and heart palpitations. This is bad for a 72 year old female. Unsure I will continue”

2 / 10
Was this helpful?YesNo
FloidaGal · Taken for less than 1 month November 8, 2020

Flagyl (metronidazole): “I have had a recent flare-up of diverticulitis, and was given Metronidazole (Flagyl) and Cipro for 10 days. I immediately started have severe gastritis (severe pain and burning) in my stomach. I suspected it was the metronidazole and every day the situation became worse! I developed painful urination and bladder symptoms, sores in my mouth, and severe stomach burning/heartburn. I read online that these were serious side effects of metronidazole. I had to stop the metronidazole after 5 days, even though my doctor insisted that I take it. Bladder symptoms resolved in 24 hours after stopping the drug. It has been 5 weeks and my stomach is still on fire. I can’t eat properly as everything causes me stomach pain. I am now scheduled for an endoscopy to see what is wrong with my stomach and esophagus. I will NEVER take metronidazole again!”

1 / 10
Was this helpful?YesNo
SIGLEINDA · Taken for 5 to 10 years March 2, 2019

Flagyl (metronidazole): “I have had Diverticulosis for years. The first attack was awful. Went to ER. So very very sick. Did the Flagyl/Cipro routine. felt worse. Over the years I have discovered many things. First of all you DO NOT WANT TO TAKE CIPRO. Google up Cipro. It is poison and even have groups of people with horror stories about Cipro. FLAGYL: All you have to do is ask your doctor to write brand medically necessary and the pills come coated with a smooth blue coating that slides down easily and do not dissolve in your mouth so no bad taste when taking taking Flagyl. If you have diverticulosis and get flares of diverticulitis do not wait. IMMEDIATELY start on flagyl A lot of the symptoms you all describe are not from the pills they are from the disease. No Cipro and start Flagyl immediately. I keep a supply always in the house.”

7 / 10
Was this helpful?YesNo
Jame · Taken for less than 1 month September 7, 2018

Flagyl (metronidazole): “I am a Flagyl survivor. Today I finish my 48 hours of it getting out of my system following 7 harrowing days of physical assault. Day 3 brought debilitating stomach pain, incapacitating nausea, dizziness/brain fog. The hospital had to confirm for me that the diverticulitis was not worse it was the medication’s side effects. What??? Is this 2018? I am a healthcare provider and this has given me insight into people’s distrust of the medical profession. The medicine first patented in 1963...now in generic form...and never an attempt to refine the med to reduce side effects? Or produce alternatives? I have an intense full time job, got lucky I was sick over the long weekend (????) and just made it through day 6 and 7 at work with the use of partially effective Zofran (anti-nausea). Find any alternative drug or treatment. I just lost 10 days of my life first to illness then to the treatment. I believe quality of life matters. Good luck diverticulitis suffers! I’m with you in spirit.”

2 / 10
Was this helpful?YesNo
DreadfulVerity · Taken for less than 1 month October 2, 2020

Flagyl (metronidazole): “I was prescribed Flagyl and Cipro for diverticulitis. oh my goodness. The drug radically wasted my muscles and made me feel dreadful, like I was slipping away. Got to where just looking at the pill made me vomit immediately. Doc switched me to Augmentin, which worked well, no problem. Why is Flagyl even legal?”

1 / 10
Was this helpful?YesNo
AmyS1006 October 3, 2016

“I was on metronidazole (flagyl) & ciprofloxacin for diverticulitis. Let me start off by saying these two medications together SUCK, however they DO work. I have never had any problems with medications...ever. (in 40 years) This time though, at times, I thought I was dying! Best described as the worst flu ever. Massive nausea, occasional vomiting, diarrhea, exhaustion, horrible taste in my mouth, nothing tasted good, and my appetite was bad. Day 4 was the peak of feeling awful. I went to every review sight trying to gather what worked to curb the symptoms. Everyone is different so what worked for others, didn't necessarily work for me. Here is what did work for me a bit, in case it can help anyone else. 1.) Try to not take them together. Split up the doses by like an hour or so. 2.) Take each dose with a little food, (even if you aren't hungry) something bland. DO NOT USE DAIRY PRODUCTS. This made my nausea worse! 3.) Have mints or candy at all times. Your mouth will feel gross and things will taste funny. However, I found spearmints also helped sooth the tummy a bit. 4.) Pepto-Bismol. 5.) Try not to take them immediately before bed at night. Give it about an hour or two. I noticed nausea will wake me up throughout the night if I take them to close to going to sleep. GOOD LUCK, and remember: Your doctor prescribed these for a reason. A reason that could turn into life threatening unless you get it controlled. The worst thing ever is to start taking an antibiotic and then stopping it mid-cycle as your body then becomes immune to it and is essentially ineffective.”

Was this helpful?YesNo
LK · Taken for less than 1 month November 11, 2019

“I took Flagyl and Cipro together for 10 days for apparent diverticulitis. I haven’t used any antibiotics for years. My experience was awful and I’m still having problems after my last dose 4 days ago. I have diarrhea, bad taste in my mouth, loss of appetite (forcing myself to eat), weight loss, and body aches. My doctor is going to check for other problems but I think these medications really messed me up. I hope the symptoms go away. It’s scary feeling like this. Thank you everyone for sharing your experiences. Makes me realize I’m not alone.”

1 / 10
Was this helpful?YesNo
Andie February 18, 2020

“Diagnosed with diverticulitis and put on Cipro and Flagyl , today is Day #10 hallelujah!! Had diverticulitis flareups 4 & 5 years ago. I forgot how sick these drugs make me. I can’t keep food down, nauseous 24 hours a day except when I take Zofran, upper stomach pains, reflux, heartburn, dizziness, listless and spend most of my day sleeping. This came at the most inopportune time I just had major knee surgery two weeks before the attack which has hindered my healing process as I can’t get up to proceed with physical therapy, it’s too nauseating to move around. If I ever get another attack I will never take these drugs again. There has to be a better way! I want my life back ”

9 / 10
Was this helpful?YesNo
trying to be thankful August 9, 2016

Flagyl (metronidazole): “This is my third diverticulitis event in 9 years, and each time I have been treated with Cipro and Flagyl, but I do not remember feeling so awful the first two times, nor do I remember the horrifically bad taste of the metronidazole (flagyl.) I can hardly get it down and after I do the horrible taste in my mouth is beyond description. I have resorted to immediately grabbing a lollipop to coat my mouth and pharynx with the sweet sugary taste, which actually does help. On top of that I am nauseated, dizzy, have a foggy brain, and nothing tastes normal or good, not even water. I am thankful for the improvement in the abdominal pain, as that shows that the horrid stuff is working, but dang, can't they put it in a capsule?”

6 / 10
Was this helpful?YesNo
Numpty November 19, 2019

Flagyl (metronidazole): “Taking the anitbiotic combo metronidazole and Cipro for a flare up of diverticulitis and now on day 4. My side effects are that I feel so dreadful, very weak, no appetite at all, dizzy, nauseated, night sweats, vaginal discharge, diarrhea, have lost 7 lbs already. Forcing small bits of food down as have to eat something, drinking lots of water, feel nauseated+++. I am in UK. This medicine is utterly brutal and toxic, but my pain is nearly gone. Longing for day 7 to end drama.”

4 / 10
Was this helpful?YesNo
Deb · Taken for less than 1 month April 5, 2020

Flagyl (metronidazole): “Having nausea everyday about 3 hours after taking Flagyl, also started feeling cramps in both calves on day 3. Only have 1 1/2 days left! Will be taking probiotics and eating yogurt as was suggested by someone in this comment stream!”

7 / 10
Was this helpful?YesNo
sick of sickness May 29, 2019

“I have had my first bout of diverticulitis. I was prescribed Flagyl and Cipro. first day I took them together, got massive headache, felt awful. Second day I did this: Cipro 6 a.m. empty stomach with 500 ml water. Coffee an hour later. 8 a.m. flagyl with a glass of milk (can't take Cipro with milk because it has calcium but you can take Flagyl with milk) or applesauce. I have no bad taste with milk. then I repeat 6 p.m. Cipro with 500 ml water, and 8 p.m. Flagyl with milk, and that's it. I get no headache, no nausea, no vomiting, nothing and I am slowly getting better. I think taking cipro AND flagyl TOGETHER causes a reaction, and gut issues. So best to separate them out, let them work separately and not mix the stuff together. Also Flagyl is an antiparasitic so might be causing a bit of Herxeimer reaction after a few days”

Was this helpful?YesNo
Yetagainforme December 9, 2016

Flagyl (metronidazole): “I deal with diverticulitis every 9 to 12 months. CT over the past 15 years keep showing mild diverticulitis as they call it but when it hits it feels nothing like mild! Nasty lower left abdominal pain . Sometimes I get a fever. Now my dr. Just put me on antibiotics as soon as I get symptoms because I always go into the fever eventually . Yes going on this for 7 to 10 days can give you diarrhea. I found quite a while ago since probiotic yogurt came out as long as I eat lots of that I rarely get diarrhea now. And since you should be on liquid and very soft food diet anyway just switch yourself and eat nothing but probiotic yogurt and soups while you're taking this stuff. always take it with a meal too. And no alcohol!”

10 / 10
Was this helpful?YesNo
marvar · Taken for less than 1 month September 12, 2019

“My Dr prescribed metronidazole and Cipro for diverticulitis. I have been taking them for 9 days and have been extremely tired and fatigued, bouts of diarrhea and I basically head to the bathroom within a few mins of eating anything. I am on a pro-biotic and eating Activa yogurt to help with the stomach issues. I also started having severe upper abdominal and back pain. A weird sensation. I did not know what was causing this, but read on this site where a few other folks had the same problems. UGH !! I'm still having some very low tenderness in my low colon area, but I think the constant bathroom trips are possibly causing this problem. I guess I should go back to the DR, but do not want to. I'm really concerned about the upper abdominal and back pain. It is fairly constant and feels tender to the touch. Good luck out there folks ! Diverticulitis is no fun.”

5 / 10
Was this helpful?YesNo
Maeward7864 January 19, 2017

Flagyl (metronidazole): “The first time I ever had diverticulitis I ended up in the hospital for three days with massive doses of flagyl through an IV. After that I had a couple of bouts of what I thought were UTI's but ended up the start of diverticulitis (which mostly happens when I travel). Because I recognize the symptoms, I am allowed to have a few pills with me at all times just in case and catching the attack soon enough usually only requires a couple of doses. It has been an absolute lifesaver!!!!! I've had to do the routine of many days and add in Cipro, so it's one of those cases where you need to be in tune with what's happening with your body to avoid getting that sick.”

10 / 10
Was this helpful?YesNo
Toosick · Taken for less than 1 month August 22, 2020

“Diagnosed in ER with acute moderate diverticulitis 9 days ago. Prescribed 14 days of both Metronidazole and Flagyl, with double dose of Metronidazole 3x daily. The side effects are making me sicker! I’ve lost 10 pounds, and the pain that had mostly gone by day 3 is back, along with vomiting. I can’t eat anything at all, I have severe diarrhea and insomnia. Heading to ER again later to see my gastro specialist. Medical reports and studies I’ve been reading say that these medications should NOT be prescribed for diverticulitis unless a bacterial infection has been confirmed. I’m not taking any more unless my doctor can convince me that the agony is worth it and that I’m not going to be worse off afterwards.”

1 / 10
Was this helpful?YesNo
PKid · Taken for less than 1 month November 7, 2019

“Was put on Cypro and Flagyl for Diverticulitis. Worked very well. Still have some pain but most of the issues have gone away. I do have some fatigue but that could also be a result of having a major infection. The bottom line is things would be far worse without these antibiotics.”

8 / 10
Was this helpful?YesNo
Shelby · Taken for 1 to 6 months September 5, 2020

“This is my second flare up with diverticulitis since March of 2020. My own fault due to my bad choice in foods. This combination of flagyl and cipro make my stomach ache, urine is dark and foul smelling, my stomach pulses, headache is mild, joints hurt, nausea, dizzy first 3 days. It is very stressful on your body. My diverticulitis is better but the side effects of the treatments take a toll on your body. I find too if I stick to taking a good probiotic with slippery elm and drink daily a full glass with a teaspoon of psyllium husk mixed in I do not have any issues. But if I backside and slack off performing this daily regimen then I flare up. Pizza, especially pepperoni is a BIG NO-NO”

10 / 10
Was this helpful?YesNo
Mary February 18, 2020

“Taking Flagyl with Cipro for diverticulitis, feel weak and tired, a bit dizzy and loss of appetite, but the pain is pretty much gone. Taking these monster pills with applesauce and it really helps! Also taking a good probiotic . Day 4 of 7.”

10 / 10
Was this helpful?YesNo
Anonymous May 26, 2020

Metro (metronidazole): “I am on the 5th day ! The last day of metronidazole 500mg twice a day ! I don't recommend this antibiotic to anyone . I have had the most vivid worst nightmares on this drug. My stomach cramps, and hurts and have diarrhea bad. I feel like my eyes are so dry and have a brain fog ,and don't know if I'm coming or going . Side note it cleared my diverticulitis up tho.”

5 / 10
Was this helpful?YesNo
Anonymous June 1, 2016

Flagyl (metronidazole): “Was given this for diverticulitis and after day 3 of taking woke up in a cold sweat, hair soaking wet and feeling faint. Slurred speach and overall feeling of dying! Went back to ER and they said it was side effect of this medication. They told me to continue no matter what, told them I'd rather die and threw the medication away. I'm still alive and doing well without this nasty medicine!”

4 / 10
Was this helpful?YesNo

This information is NOT intended to endorse any particular medication. While these reviews might be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare practitioners.

Learn more about Diverticulitis

IBM Watson Micromedex

Mayo Clinic Reference