GLP-1 Medication Side Effects

Per FDA labeling of brand-name GLP-1 products, the most common side effects are gastrointestinal — nausea, vomiting, diarrhea, and constipation. These typically occur during dose escalation and improve as the body adjusts.

FDA labeling for the brand-name semaglutide and tirzepatide products reports overlapping gastrointestinal side-effect profiles, with some differences in frequency. Tirzepatide products may report somewhat different GI patterns than semaglutide products.

Most side effects reported in the brand-name product trials were mild to moderate and resolved within the first 4-8 weeks of treatment. Gradual dose escalation reduces side effect severity.

Per FDA labeling of brand-name GLP-1 products, rare but serious side effects include pancreatitis, gallbladder problems, and severe allergic reactions. Contact your provider immediately if you experience severe abdominal pain, persistent vomiting, or signs of an allergic reaction.

Eating smaller meals, staying hydrated, and following the prescribed titration schedule help most patients manage side effects. Your Weight Method provider can adjust your dosing plan if needed.