I dont believe so
I took Alli for 8 months and I only got the dreaded side effects when I thought I could cheat as I had taken the pills so I could have a "Treat" and then I paid for it with the side effects coming on
Basically ion my experience if you eat really healthly and cut down on the fat then the side effects are hardly noticable!!
If you really want to check eat a bag of chips and you will see what all the fuss is about ...but please trust me and know they are working ok