Possible side effects may include nausea, vomiting, constipation, diarrhea, indigestion or stomach discomfort, bloating, reduced appetite, delayed gastric emptying (feeling unusually full or slow digestion), headache, fatigue, and injection site reactions. Serious but rare side effects may include pancreatitis, gallbladder problems, changes in kidney function, severe abdominal pain, jaundice, changes in urination, or swelling.