What causes the side effects?

[melmel]

Do you know what it is in Alli that causes the side effects? Do you know how the drug works and why it sometimes results in the side effects?

[summer]

alli combines with the fat you eat, and turns it into a form your body can't absorb. It is then excreted, and since it is a lot of fat, you get the oily stool and other problems.

[craigguy]

It sounds rather simple, and it doesn't sound too bad. Does anthing else contribute to the side effects?

[summer]

I don't know what it does that means you shouldn't take it if you have kidney stones, for instance, or have had heart trouble.