The most common side effects include nausea, vomiting, diarrhea, stomach pain, low appetite (which the drug is meant to cause), fatigue, and dizziness. There is also a risk of low blood sugar, which is more likely if you take other medications to manage blood sugar.
More serious side effects are less common but include pancreatitis, gastroparesis, problems with your gallbladder, and bowel obstructions. Consult your provider about managing side effects. Some may be managed by lowering your dose or behavioral modifications (e.g., eating smaller meals more frequently), but others can require immediate medical attention..