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Orlistat and Cramps: What Users Say

Brand names: Xenical, Alli

Cramps: mentioned by 5 users (1.3%)

Based on user experiences from 400 Orlistat 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 11.0%
gas 5.0%
upset stomach 5.0%
constipation 3.3%
bloating 1.8%
oily skin 1.5%
cramps 1.3%
headaches 1.3%
liver damage 1.0%
bowel movements 0.8%

Reviews for Orlistat

  • Bab...
  • Taken for 1 to 6 months
  • April 15, 2018

Orlistat for Weight Loss (Obesity/Overweight) "I almost decided not to try Alli because of the horror stories, but I'm glad I did. The first two days I had minor nausea and slight cramping, but it never recurred after that. I have followed the diet and fat requirements, and I have never had an accident or any problems, I am on week 4. The only slight day-to-day issue is minor constipation and a little gas. Not enough to make me stop taking it. I ate in a restaurant for the first time and did not have access to nutrition content and had no issues. If you are serious about diet and weight loss, give it a try and don't let the horror stories deter you."

9 / 10
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170 Report
  • big...
  • February 13, 2010

Orlistat for Weight Loss (Obesity/Overweight) "Just over 4 weeks ago, I started taking Xenical that my doctor prescribed me. On the day I started, I weighed 23 stone 13 lbs, and now I am at 22 stone 5 lbs, so I have lost 21 lbs in just over 4 weeks! I was sensible enough to read online reviews and decided to make sure I eat as little fat as possible. When I'm hungry at lunch, I occasionally have an egg and bacon sandwich but cooked in no fat and using fry lite spray, cutting the fat off the meat. I have a sensible normal dinner and breakfast, sometimes toast with no butter and a banana inside or a couple slices of ham. I have cut out all the junk. Side effects for the first few days included slight tummy cramps and very occasionally a looser stool when going to the toilet, but no other side effects at all."

9 / 10
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139 Report
  • Mar...
  • Taken for less than 1 month
  • September 25, 2018

Orlistat for Weight Loss (Obesity/Overweight) "I started taking Alli the other day. I have had to purchase Poise pads, just in case of an oil gas or stool. I have read nothing but horror stories. But I am just experiencing extra bowel movements in the toilet. Mild stomach cramps. I wear the pads in case of anything due to side effects, but have had nothing at all. Lost weight already. But I am not hungry at all. I tried out the first day on a Sunday in case of adverse side effects. So far...so good. Hopefully, this can be my go-to for weight management going forward."

10 / 10
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59 Report

Frequently asked questions

  • Kim...
  • July 13, 2017

Orlistat for Weight Loss (Obesity/Overweight) "The moment I hit 30, my metabolism slowed. Despite working out and eating healthy, I felt bloated after I ate, and I was irregular. I really felt like my body was overloaded and not processing things at a normal speed, but I felt lethargic and hungry, so I was starting to get depressed over the whole thing. I tried diuretics/lax and increasing fiber to no avail, and the cramping sucked. This is making a real difference. I feel leaner and lighter, and my joints aren't so overtaxed carrying the extra weight. My energy is way better. It's messy at times and not easy, but if you have two weeks of downtime where you can be by the bathroom, give this a go."

9 / 10
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34 Report
  • bee...
  • May 20, 2018

For Weight Loss (Obesity/Overweight) "I started orlistat almost 2 weeks ago and did lose 6 lbs, but I am very, very constipated. I'm not sure if it was the pill or my IBS (irritable bowel syndrome) acting up again. Once I got that under control, now there is lots of restroom time, no leaky stool, or wet farts. I do have lots of cramping and gurgling, but it's tolerable. I do walk but have a bad foot... waiting on x-rays. I guess I'm going to have to do other things not to injure it more."

7 / 10
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7 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.