Slimtop 120 mg (Orlistat) is generally well-tolerated, but it may cause some side effects, particularly during the early stages of use. Common side effects include oily or fatty stools, increased bowel movements, gas with discharge, and abdominal discomfort. These effects are typically linked to the fat-blocking action of the medication and often lessen with time or dietary adjustments. Less commonly, users may experience headaches, fatigue, or skin rashes. In rare cases, liver function abnormalities or kidney stones can occur. To reduce side effects, maintain a low-fat diet while using Slimtop. Always consult your doctor before starting Slimtop, especially if you have a history of digestive disorders or are taking other medications.