Alli and Diarrhea: What Users Say

• Sta...
• Taken for 1 to 6 months
• October 10, 2019

For Weight Loss (Obesity/Overweight) "I take Alli on and off, it is helpful, but today was different. As I was sitting in the office, I felt my downtown area wet, then I went to the restroom. The moment I was doing #1, then #2 started coming out as well, and when I looked in the toilet it was oily (red). To tell you the truth, I lost 20 lbs already."

• blo...
• March 23, 2014

For Weight Loss (Obesity/Overweight) "I'm on my second month, and or bottle of Alli. I tried it in the past, but I must admit, I ate fat and yes, had the loose bowel motion, but didn't gain weight. Now I only had 15 lb to lose, and so far, I've lost 7-9 lbs in a month, eating good. I did go on a week vacation and ate cake, drank cocktails, ribs, etc. Not every day, and yes, it came right out. Don't laugh, but I didn't gain a pound during the week. I'm not using it for that reason, but hey, now you can go on that cruise during your diet and not gain weight. Yes, you go to the bathroom a lot, but you know it's all coming out. For the most part, I'm 90 percent on track, with no side effects. And if I eat pizza and nachos on Friday night, so what, I don't gain weight and for once I'm not constipated."

• Sam...
• March 14, 2016

For Weight Loss (Obesity/Overweight) "I've lost about 5 lbs in a little over a week. I'm not sure at this point how much of that weight loss has been from Alli or if it was from changing my diet and eliminating sugars and carbs. I can see the oily fat in the stools. Yesterday I made a BIG mistake and ate fries and a fried chicken sandwich. Since I have had two accidents, where my flatulence has spewed large amounts of oil into my underwear. Was not expecting that. Will not eat a high-fat meal again on these pills."

• Sun...
• April 16, 2016

For Weight Loss (Obesity/Overweight) "I started taking Alli once I plateaued after losing about 12 lbs, and it has kick-started my weight loss again. I am on a daily exercise routine and try to stay very active. My eating habits are not great but not bad. With Alli, if you eat too much fat, you will have side effects. With my experience, I have had soft stools with oil slicks and oily flatulence, which is unpleasant but a motivation to stop me from eating things I shouldn't be eating. It acts as a consequence to your stupid choices, which I need. After a solid week of taking it three times a day with each meal, I have lost 2 lbs this week. I was stalled for four weeks without any loss, which is very frustrating! This works, hands down! 30 lbs to go."

• Sas...
• Taken for less than 1 month
• January 29, 2018

For Weight Loss (Obesity/Overweight) "Started Alli feeling unhealthy, no energy, not much bowel movement. 5'5", weighing 195 lbs. I know most of it's fat. I used to lift weights years ago in my younger days when I was fit. I had pregnancy diabetes. Dr. said if I didn't keep weight under control, I'd be a diabetic later in life. Once I had the baby, I no longer had to take insulin, but 20 years later, I'm overweight. I started Alli and went from 195 lbs to 190 lbs, lost 5 lbs in one week. My b.m.'s are more consistent, I feel more energy. I walk about a mile each day. I try to watch what I eat so that I don't get oily stools with stomach cramping (feels like menstrual cramps). Sometimes I splurge on a steak dinner when my husband takes me out to dinner. The rest of the week, it's one piece of lightly buttered toast with a cup of coffee, sugar/cream, and an apple for breakfast, a tuna sandwich with an apple for lunch, and air fryer chicken or fish filet for dinner. It's been only one week on Alli, I'm determined to lose 45 more lbs."

• Mik...
• August 15, 2015

For Weight Loss (Obesity/Overweight) "I used it years ago with great success. Not sure what they changed in the formula, but it no longer works for me personally. It used to block some fat, which obviously came in your poo, kind of orangey in color. It doesn't do this anymore, it just gives me diarrhea. I'm not wasting any more money."

• All...
• Taken for 1 to 6 months
• October 11, 2022

For Weight Loss (Obesity/Overweight) "We all know the side effect about diarrhea of those pills, but it's totally not candy. As a type 1 diabetic, I do a blood test every 6 months to watch the function of my kidneys. My blood test is very bad after Alli. The kidneys are really tired because of Alli. ALWAYS ask your doctor before using it. Alli is not candy, not natural. The first week I lost 3 pounds, and that's it. So no... it's totally not worth it."

• Mar...
• Taken for less than 1 month
• February 13, 2017

For Weight Loss (Obesity/Overweight) "I used Alli for about three weeks. I didn't notice it helping me lose weight faster than I can with a Weight Watchers program. It did increase my bowel movements. I did have some stomach discomfort and gas. I stopped using it at the end of the third week because I went out to dinner and took my pill with my meal, and it made me extremely ill. Vomiting and diarrhea for over eight hours!!! I would not recommend this product to anybody!!! Weight Watchers is working out very well for me. Eating healthy and exercise is the only way to go, there is no magic pill!!! I had to find out the hard way!"