Fosfomycin and Diarrhea: What Users Say

• Inn...
• Taken for less than 1 month
• October 9, 2020

Fosfomycin for Bladder Infection "Lower UTI symptoms subsided 24-48 hours after taking Monurol. One dose is good for 3 days. Today is the 4th day and I don't need to take a second dose as I am relieved. However, the side effect is bothersome since I took this. I have extreme vaginal itching. Also slight abdominal tenderness and minor diarrhea. But the vaginal itching is problematic. I can't focus and can't sleep. Did anyone experience this? Is this normal? How long will I wait until this goes away? What can I do?"

• dia...
• Taken for less than 1 month
• March 11, 2025

For Urinary Tract Infection "I have taken this antibiotic several times, always one dose at night without going to the toilet the whole night to 'let it work' in the bladder for a longer time. It does its job immediately. However, the amount of stomach and gut pain afterwards, followed by diarrhea, is immense. Crazy strong antibiotic. I need at least 2 weeks to recover a little bit from the pain and issues this causes. Imagine the damage it makes long-term. Be cautious, only take if last option."

• Dot...
• Taken for less than 1 month
• September 30, 2024

For Urinary Tract Infection "My doctor prescribed this for a potential UTI (frequent urination and trace of blood in pee). Seemed easy, one packet and done, so I thought. Took it late in the day on Tuesday, and by Wednesday I started to have pain in my stomach and then nausea and diarrhea. By Thursday into Friday, it was more frequent, and then began the rash on my skin-very intense itchy spots and then welts. By Friday night, I started to have excruciating lower back pain, and then Saturday it was all the above and added in groin pain. I feel awful. Going to the doctor tomorrow. I feel so horrible and still have urgency."

• Hum...
• March 26, 2023

Fosfomycin for Bladder Infection "Do not take this drug! Took it while in Singapore, single dose, as I thought it would be easier than a 5-day course. I have been so ill with diarrhea after every meal, nausea, and stomach cramps. This is my 5th day and still not well. I have no appetite and exhausted."

• Anonymous
• Taken for less than 1 month
• November 10, 2021

Fosfomycin for Bladder Infection "Took it for a bladder infection. Two days later, had really bad abdominal pain. I started shivering, then collapsed. Woke up soaking wet with sweat, had to call an ambulance. A week has passed since taking it, along with probiotics, and I still have to run to the toilet with loose diarrhea."

• noe...
• February 9, 2020

For Bladder Infection "I was told that fosfomycin is as effective as Macrobid, is a one-time use medication, and is a powder that dissolves into 1.5 cups of water. However, my urine would need to be tested to see if I have any culture that could prevent the antibiotic from working. This medication works after 72 hours and is ingested on an empty stomach. If you are prescribed this medication, you're honestly better off receiving an antibiotic that is stronger and not a one-time use prescription. Today, I went into another walk-in clinic, explained the situation, and the doctor said that fosfomycin is not a strong medication. Again, try it for yourself with the chance of this antibiotic not working. The side effect symptoms I had were stomach cramps and diarrhea. It did subside other symptoms: after one day I didn't feel sick, and by day two, I had no burning sensation. However, by this weekend, my left side became sore (which is where your kidneys are), and that was enough for me to go see the doctor."

• Anonymous
• May 16, 2020

For Bladder Infection "Although the bladder infection went away after I’d finished the treatment, the side effects of this drug are horrible - I had diarrhea for 3 days, and the UTI infection symptoms didn’t get better until after I had finished the treatment."

• Jra...
• Taken for less than 1 month
• March 4, 2018

Fosfomycin for Bladder Infection "I was prescribed this one-dose antibiotic by my doctor. How convenient, I thought. Really potent stuff that did nothing for me but made my symptoms worse. I was surprised that after 5 days, no sign of it working aside from a violent twitch in my eye, bloating, urinating up to 6 times in a row in pain, and a bit of diarrhea. Also surprised not finding anything on what I have experienced. Also surprised that no one in the reviews suggests alternatives. After five days of pain, I went to my pharmacy because I was running out of toilet paper, and in the natural products section, a man told me to take VitaCist, Sisu vitamin C, and probiotics. After the first dose of VitaCist, considerable improvement."

• Riz...
• Taken for less than 1 month
• August 29, 2018

For Bladder Infection "Horrible experience. Within hours of taking it, I had severe indigestion, trouble breathing, a bloated stomach, chest pain, diarrhea, and my heart rate has been between 90-120 all day, and I could feel it pounding all day. Medicine hasn’t seemed to be efficient either. Would not recommend, the side effects are scary."

• Diy...
• April 25, 2019

Fosfomycin for Bladder Infection "Monurol worked for like 2 days only! Burning came back, foul smell in urine came back after the 3rd day. Will not recommend this medication. It gave me the worst diarrhea of my life. First, I was dealing with infection, now I have to deal with diarrhea as well. My doctor will be prescribing another set of antibiotics. What a waste of my time and money."

• Tan...
• Taken for less than 1 month
• July 26, 2017

For Bladder Infection "Used orally for UTI, and all the side effects just started to appear day by day, and instead of becoming healthy, I deteriorated. Diarrhea, abdominal and back pain, nausea, chest pain, dysuria, sleeplessness just started to aggregate, and now I am in the most miserable condition. Won't recommend at all."

• K J...
• Taken for less than 1 month
• July 24, 2022

For Bladder Infection "I was so excited to get a one-dose instead of a 7-day antibiotic. I took it on Friday around 11:30 a.m., and within an hour, I had these terrible stomach pains that lasted around 6 hours. Then they were on and off and went away by the time I went to bed. Then I woke up in the middle of the night with back pain, on the right side just above my butt. This dull, aching feeling I’ve never had before. Still dealing with it on Sunday. Also had some diarrhea that lasted all Saturday. I’ve felt miserable on this. Hoping this UTI hasn’t moved to the kidneys now. Burning urine and UTI pain seem to have passed, but with the side effects… this is NOT worth it."

• Mne...
• Taken for less than 1 month
• February 4, 2022

For Bladder Infection "I was skeptical of this med after reading reviews, but how bad could it be? Plus, I thought one dose is way better than trying to remember more. Buckle up, it's that bad. I'm on day three after taking it for UTI. Within 30 minutes of taking it, I started to feel pressure in my abdomen. Shortly after that, I felt like an overinflated balloon. The bloating wouldn't stop. I had been advised to drink lots of water, which I did, and I went from feeling like I had to go all the time to not being able to at all, which did eventually subside. Make a note, when they say drink lots of water, they don't mean just the day you take it. They mean every day for a few days. I woke later that night with diarrhea, and it has not stopped since. I also have had a migraine and now have pain in my lower back. I still have some UTI symptoms."

• Too...
• September 27, 2022

Fosfomycin for Bladder Infection "Took a single dose and urine smelled less foul, and I think I am free of infection, but not diarrhea, I’m afraid. Very urgent motions nearly every time I pass urine. Hope it doesn’t last more than a week."

• see...
• Taken for less than 1 month
• October 27, 2022

Fosfomycin for Bladder Infection "Awful, did not help, still suffering side effects, nausea, back and stomach pain, loose bowel. It has set me right back. I am not over side effects, and it has been 8 days."

• Bb8...
• Taken for less than 1 month
• March 25, 2022

For Bladder Infection "It tastes amazing, which was surprising, however, it did cause diarrhea. Have to wait 3 days for my urine cultures to be back to see if it was the right antibiotic."

• Lea...
• Taken for less than 1 month
• October 17, 2021

For Bladder Infection "Cured my ITC after 1 dose, but nearly was so bad for me in the process too. Extreme diarrhea, stomach ache, and weakness. Could not eat for 2 days! Never again!"