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Pentasa and Hair Loss: What Users Say

Hair loss: mentioned by 8 users (9.0%)

Based on user experiences from 89 Pentasa reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

diarrhea 9.0%
hair loss 9.0%
cramps 6.7%
chest pain 4.5%
headaches 4.5%
heart palpitations 4.5%
severe pain 4.5%
bleeding 3.4%
nausea 3.4%
upset stomach 3.4%

Reviews for Pentasa

Commonly mentioned side effects
  • col...
  • Taken for less than 1 month
  • April 14, 2016

For Crohn's Disease, Maintenance "I was recently diagnosed with Crohn's, having painful cramps, bloody stool, and diarrhea. My 2nd day being on Pentasa, I ate Taco Bell (which most people with Crohn's will tell you almost kills you, haha!) I had absolutely no cramps or diarrhea!!! I'm on week 2, taking 500 mg 4 times a day, and I'm still feeling great! No cramps whatsoever! The only symptoms I've noticed were slight chest tightness the first couple of days, slight weight loss, increased appetite, and a little bit of my hair falling out. I started taking folic acid to help with the hair loss."

10 / 10
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52 Report
  • Anonymous
  • December 26, 2011

For Crohn's Disease, Maintenance "I'm a 25-year-old female. I was diagnosed with Crohn's in August 2011. I had a bowel resection at the end of September due to the severity of my illness. I've been taking Pentasa for about 3 months now and feel good, but my hair has been falling out like crazy. I read a normal person loses 50-100 strands a day, I'm losing probably triple that. It's really depressing. I'm switching to another medicine to see if that helps with the hair loss. Other than that, I haven't had any side effects. Good luck!"

7 / 10
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40 Report
  • Anonymous
  • September 29, 2011

For Ulcerative Colitis, Active "I took Pentasa for ulcerative colitis after Asacol started failing. Asacol had worked for me for seven years, but when P&G started having manufacturers make it in Europe, it no longer worked. The Pentasa worked for my ulcerative colitis at a 3-gram per day dosage. The side effects are much worse for Pentasa. I experienced nausea, mild headaches, and severe hair loss."

6 / 10
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30 Report

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Frequently asked questions

  • Anonymous
  • Taken for 10 years or more
  • January 22, 2020

For Crohn's Disease, Maintenance "I'm a 51-year-old male from Scotland and was diagnosed with Crohn's at 30. I take 1 sachet of Pentasa in the morning, and it has been keeping everything at bay. I can have a pint or two and can eat what I like with no effects. I can suffer cramps in my back passage through the night, which lasts about 15-30 minutes every 2 to 3 months. Also, losing my hair and on blood pressure tablets. This is side effects of Pentasa."

10 / 10
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9 Report
  • Psy...
  • Taken for 1 to 2 years
  • August 15, 2015

For Inflammatory Bowel Disease "This is the first drug I was prescribed after hospitalization and initial diagnosis. It made it possible to get off steroids and back to work. Hair loss was extensive, until I increased water intake and saw a renal dietitian. Even though I am allergic to sulfa drugs, this has been the least risky of the medications prescribed for my condition. My hair has grown back in, and with lifestyle changes I am much better. Long term, this is the only regimen that works for me."

9 / 10
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10 Report

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  • sew...
  • Taken for 1 to 6 months
  • March 11, 2014

For Crohn's Disease "I had surgery removing 6' of my small intestines. In Dec. 2013, I was diagnosed with Crohn's disease. I have been taking Pentasa for about 3 months, since Jan. 2014. It has really helped me, but I am losing handfuls of hair every day. I am also having dizzy spells. The hardest side effect to deal with is, every time I have a bowel movement, I have terrible itching inside my rectum. Otherwise, I haven't noticed any other side effects yet."

10 / 10
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10 Report
  • San...
  • Taken for 1 to 6 months
  • December 4, 2021

For Inflammatory Bowel Disease "Pro: It kind of worked a bit. My bloodwork improved, and the mildest part of the inflammation went away. Cons: It didn't work enough. The area of more severe inflammation hasn't budged, unfortunately, and I'm still having bad stomach cramps every day. I tried upping my dose from 2 grams to 4 grams, and that actually made my symptoms worse, so I went back down. I'm also losing a lot of hair, but it's not really noticeable to anyone else, and I will say that that's the only side effect I've had from this medication on a 1-2 grams dosage, which I think is pretty good. If your doctor tells you to take this medication, definitely take it! I wish it had worked for me. It does work for a lot of people. I would be happy to take this medication every day for the rest of my life if it only worked!"

5 / 10
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2 Report
  • Ran...
  • November 13, 2015

For Crohn's Disease, Maintenance "I've been on Pentasa for 3 years. I've had very bad acne and lost a lot of hair."

3 / 10
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21 Report

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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.