Tirzepatide has extensive human safety data, but it should still be prescribed after medical screening. The most common side effects are gastrointestinal—such as nausea, diarrhea, constipation, vomiting, or reduced appetite—and are often most noticeable during dose escalation. In SURMOUNT-1, gastrointestinal adverse events were the most common treatment-related issues clinical trial. Your clinician will review personal and family history, current medications, gastrointestinal disease, gallbladder or pancreatic history, hydration, and other relevant contraindications before treatment. A lower or slower titration may be appropriate for patients who are sensitive to appetite suppression or who want body recomposition without aggressive weight loss.