What are diet-related treatment effects?
alli works by preventing the absorption of some of the fat you eat and so as a result of the way it works, you may notice an effect on your bowel movements. These effects are related to your diet and if you stick to your fat targets they should be manageable. However, if you eat too much fat, these changes are more likely and may include wind (flactulence), with or without oily spotting, sudden bowel motions or soft stools, fatty or oily stools. It is important to remember that these diet-related treatment effects are largely due to what you eat. If you stick to your recommended fat targets, you are less likely to have any problems. In a 3-month study of alli use, less than 9% of subjects on alli dropped out due to these effects. In fact, many users have told us that the effects were a signal that the capsules were working and helped them maintain healthier eating patterns. All medicines can have side effects so you should check with your doctor if anything unusual or severe occurs whe