trulicity isn't for people with type 1 diabetes or diabetic ketoacidosis. don't take trulicity if you're allergic to it, you or your family have medullary thyroid cancer, or have multiple endocrine neoplasia syndrome type 2. stop trulicity and call your doctor right away if you have an allergic reaction, a lump or swelling in your neck, or severe stomach pain. serious side effects may include pancreatitis. taking trulicity with a sulfonylurea or insulin increases low blood sugar risk. side effects include nausea, diarrhea, vomiting, belly pain, and decreased appetite, which lead to dehydration and may worsen kidney problems. i have it within me to lower my a1c. ask your doctor about trulicity.