Zepbound is the weight-management branded version of tirzepatide, FDA-approved in November 2023 for chronic weight management in adults with obesity or overweight with a weight-related condition. It was also approved in December 2024 for moderate-to-severe obstructive sleep apnea in adults with obesity — making it the first medication ever approved for sleep apnea treatment.
Zepbound and Mounjaro contain the exact same active ingredient at the same doses. The difference is the indication: Mounjaro is labeled for type 2 diabetes, Zepbound for weight management and sleep apnea. In clinical practice, this distinction affects insurance coverage but not pharmacological effect.
In the SURMOUNT-1 trial, participants on 15mg tirzepatide (the same molecule) lost an average of 22.5% of body weight over 72 weeks. Approximately 60% of patients at 10–15mg lost 20% or more of their total body weight — a result unmatched by any other FDA-approved medication.











