Wegovy and Zepbound are both FDA-approved for chronic weight management, but they are different drugs: Wegovy is semaglutide and Zepbound is tirzepatide. Here is a neutral, plain-English comparison. This is educational, not medical advice; which one fits you is a prescriber’s decision.
| Wegovy | Zepbound | |
|---|---|---|
| Active drug | Semaglutide | Tirzepatide |
| How it works | GLP-1 receptor agonist | Dual GIP + GLP-1 receptor agonist |
| FDA-approved use | Chronic weight management | Chronic weight management |
| Standard max dose | 2.4 mg weekly | 15 mg weekly |
| Form | Weekly subcutaneous pen | Weekly subcutaneous pen or vial |
Zepbound (tirzepatide) acts on two gut-hormone pathways (GIP and GLP-1), while Wegovy (semaglutide) acts on one (GLP-1). In manufacturer trials of each drug, and in a head-to-head study, tirzepatide produced a higher average weight loss at its top dose than semaglutide did — though individual results vary widely and both are effective for many people.
Both share the GLP-1-style side-effect profile — nausea, constipation, and other digestive effects, especially while the dose is being increased. Which one an individual tolerates better is personal and unpredictable. See GLP-1 side effects and how to manage them.
Both are brand-name weight-management drugs and are priced in a similar range; insurance coverage for weight-loss drugs varies a lot by plan. See ways people lower GLP-1 costs (informational, no vendor picks).
No — Wegovy is semaglutide and Zepbound is tirzepatide. Both are FDA-approved for weight management, but they are different molecules from different makers.
In trials, tirzepatide (Zepbound) showed a higher average weight loss at its top dose than semaglutide (Wegovy). Individual results vary a great deal and depend on dose, diet, activity and time.
On the standard schedules, Wegovy goes to 2.4 mg weekly and Zepbound to 15 mg weekly.
Not on your own — they are different drugs with different dosing and pens. Any switch is a prescriber’s decision.
Both cause GLP-1-style digestive effects like nausea and constipation, most often while the dose is increasing. Which one a person tolerates better is individual.