On Nov. 8, 2023, the U.S. Food and Drug Administration approved Eli Lilly’s Zepbound (tirzepatide) injection for chronic weight management in adults with obesity (body mass index of 30 kilograms per square meter (kg/ m2) or greater) or overweight (body mass index of 27 kg/m2 or greater) with at least one weight-related condition (such as high blood pressure, type 2 diabetes or high cholesterol) for use, in addition to a reduced calorie diet and increased physical activity.

Approximately 70% of American adults have obesity or overweight, and many of those overweight have a weight-related condition. Losing 5% to 10% of body weight through diet and exercise has been associated with a reduced risk of cardiovascular disease in adults with obesity or overweight.

Zepbound activates receptors of hormones secreted from the intestine (glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP)) to reduce appetite and food intake. Zepbound is administered by injection under the skin once weekly, and the dosage must be increased over four to 20 weeks to achieve the target dosages of 5 milligram (mg), 10 mg or 15 mg once weekly. The maximum dosage of Zepbound is 15 mg once weekly.