Review a personal or family history of medullary thyroid cancer, MEN 2, severe stomach-emptying problems, pancreatitis, gallbladder disease, allergies, and pregnancy plans before treatment. Nausea, vomiting, constipation, or diarrhea can occur. Persistent severe abdominal pain or inability to keep fluids down needs emergency department assessment now. Call 911 for breathing difficulty, a severe allergic reaction, loss of consciousness or unsafe travel. Tell the anesthesia team about treatment before a procedure. Do not combine GLP-1 medicines or change the dose yourself. For weight treatment, stop semaglutide at least two months before a planned pregnancy with prescriber guidance. Do not buy “research use only” products or assume compounded concentrations and syringe units are interchangeable.