to improve blood sugar in adults with type 2 diabetes when used with diet and exercise. trulicity is not insulin. it should not be the first medicine to treat diabetes, or for people with type 1 diabetes or diabetic ketoacidosis. do not take trulicity if you or a family member has had medullary thyroid cancer, if you've had multiple endocrine neoplasia syndrome type 2, or if you are allergic to trulicity. stop trulicity and call your doctor right away if you have a lump or swelling in your neck, severe pain in your stomach, or symptoms such as itching, rash, or trouble breathing. serious side effects may include pancreatitis, which can be fatal. taking trulicity with a sulfonylurea or insulin, increases your risk for low blood sugar. common side effects include nausea, diarrhea, vomiting, decreased appetite and indigestion. some side effects can lead to dehydration, which may make existing kidney problems worse. once-weekly trulicity may help me reach my blood sugar goals. with trulicity, i click to activate what's within me.