What are the most major side effects you've noticed since you started taking Alli? Did you know that Alli had those side effects before you started? Do you mind the side effects or do you think it is worth it?

The most major side effect appears to be loose stool and other bowel problems. Although, there may be major side effects that are dangerous for people with preexisting medical conditions.

I am thinking about starting Alli, but the side effects are giving me pause.

Can anyone tell me how long the side effects last? I am really worried about the loose stool, is this just a one time thing of getting to the bathroom in time or does it last all day?

Thanks to anyone who can help.

I have been taking Alli for four days, one pill three times a day. So far I have experienced orange oil stools when I have to go to the bathroom, but no loose stools, or uncontrollable stools. However my Aunt stayed in the bathroom and even messed her pants and did not even feel it due to the oily substance (fat) that comes out. I guess it just depends on the person. So far so good for me, I'll let you know if that changes.

Hey all, I have been taking Alli for a week now. I had the orange oily stools all along, but today I had gas, I thought, but ending up messing my pants and could not control it. I had to leave work, come home shower, and go back to work. I'm not sure if losing the weight is worth this or not. I was so embarrassed. Luckily I had a coat to wrap around my waist, but people still knew I left and came back.

Ha ha!!! sorry to laugh, but I can see the situation and how uncomfortable it must have been. Imagine how rough it is for me, I am a cable installer and inside other peoples houses all the time. Many times I have had to make a stop outside and go in a plastic bag in the back of my van. Sounds nasty I know, but the alternatives are to use the customers bathroom (yeah right, loud and greasy, not to mention the extra stink) or hold it until I have an accident (again no)