 Don't share needles or pens or reuse needles. Don't take Ozempic if you or your family ever had medullary thyroid cancer or have multiple endocrine neoplasia syndrome type 2 or if allergic to it. Stop Ozempic and get medical help right away if you get a lump or swelling in your neck, severe stomach pain, or an allergic reaction. Serious side effects may include pancreatitis, gallbladder problems may occur. Tell your provider about vision problems or changes. Taking Ozempic with a sulfonylurea or insulin may increase low blood sugar risk. Side effects like nausea, vomiting, and diarrhea may lead to dehydration, which may worsen kidney problems. Living with type 2 diabetes?