I am not sure what I hate more, the fact that this product has the same side effects giardia does, or the fact that the product designer channeled an Apple-esque feel with it’s mini iPod like coloring. Personally I think they should have packaging with pictorials of what might happen to you if you use this product. Imagine Capt. Lisa M Nowak in diapers.

From The New York Times

The drug blocks the breakdown and absorption of fat in the intestine, at the same time blocking the absorption of calories from that fat. Fat that is not absorbed merely passes through the system, and that is the reason for the side effects like flatulence, oily stools and occasional loss of bowel control.
“Say you have a big fatty meal,” said Dr. Frank, medical director of the George Washington University Weight Management Program. “It blocks the absorption of a lot of fat, which is good, except that when you get a lot of fat way down in your colon, you have a chance of diarrhea, loose stools and unpleasant intestinal symptoms.” Source

From myalli.com,

Does alli have side effects?
In many cases, that’s up to you. alli works by preventing the absorption of some of the fat you eat. The fat passes out of your body, so you may have bowel changes, known as treatment effects.
You may have:
• gas with oily spotting
• loose stools
• more frequent stools that may be hard to control
Eating a low-fat diet lowers the chance of these bowel changes, especially if you limit your fat to 15 grams per meal.
While no one wants to experience treatment effects, you may think of them as a way to become more aware of what you eat. Minimizing treatment effects can be an incentive to keep from eating too much fat.

So, it absorbs fat, but to not get the side effects, you shouldn’t eat much fat. Why are you using the pill? Please someone tell me.