Drug guide · evidence, not hype
Wegovy
semaglutide · a GLP-1 receptor agonist · made by Novo Nordisk
Wegovy is the weight-management brand of semaglutide — the same molecule as Ozempic, studied and approved specifically for obesity. This is where the large weight-loss trial figures come from.
The short answer
Wegovy is a brand name for semaglutide, a GLP-1 receptor agonist made by Novo Nordisk and FDA-approved for chronic weight management (and, since 2024, for reducing cardiovascular risk in adults with obesity or overweight who also have heart disease). It is the same molecule as Ozempic; the difference is the approved use and the dose ceiling studied for each. The headline obesity weight-loss numbers come from Wegovy’s trial program.
- Molecule
- semaglutide
- How it works
- a GLP-1 receptor agonist
- Maker
- Novo Nordisk
- Form
- a once-weekly injection
- FDA-approved for
- chronic weight management, and reducing cardiovascular risk in adults with obesity or overweight plus established heart disease
- Sibling brand
- Ozempic — the same molecule, approved for type 2 diabetes
No doses, no sourcing. This page explains what Wegovy is and points you to graded answers — it doesn’t recommend a product, a dose, or a place to buy anything.
Same molecule, different brand
Wegovy is semaglutide. Here is how semaglutide maps to its approved brands — Ozempic is its sibling (the same molecule, approved for type 2 diabetes).
- Ozempictype 2 diabetes (and cardiovascular-risk reduction in those with heart disease)
- Wegovychronic weight management, and cardiovascular-risk reduction
- Rybelsustype 2 diabetes — the oral (tablet) form
What each brand is approved for
| Brand | Molecule | Type 2 diabetes | Weight management | Cardiovascular risk | Obstructive sleep apnea |
|---|---|---|---|---|---|
| Wegovy | semaglutide | — | ✓ | ✓* | — |
| Ozempic | semaglutide | ✓ | — | ✓* | — |
| Mounjaro | tirzepatide | ✓ | — | — | — |
| Zepbound | tirzepatide | — | ✓ | — | ✓ |
✓ FDA-approved · ✓* approved in a defined sub-population (e.g. cardiovascular-risk reduction requires established heart disease). From each product’s FDA label. Not medical advice, not a buying guide.
Start here
The questions people actually ask about Wegovy — each answered on the site’s 8-rung Evidence Ladder and linked to primary sources.
- Rung 2Zepbound vs Wegovy: what the head-to-head evidence showsThe head-to-head with the dual-agonist, Zepbound.
- Rung 1Are Ozempic and Wegovy the same drug?Wegovy vs Ozempic — same molecule, different approved use.
- Rung 1Semaglutide side effects: what the evidence actually showsWhat the evidence shows about semaglutide’s side effects.
- Rung 1Semaglutide vs tirzepatide: how they really compareHow semaglutide compares with tirzepatide on weight loss.
- Rung 1What happens when you stop GLP-1 medications?What the evidence says happens when you stop.
- Rung 3Keeping weight off after stopping a GLP-1Holding the result — the maintenance question.
Myths about Wegovy, graded
The viral claims, checked against the evidence — not a true/false binary, but how much weight the evidence can actually bear.
- Strong evidenceRung 1 of 8 · Established“Ozempic works without any diet or exercise changes.”Misleading — the trials that proved it work paired the drug with diet and activity
- Strong evidenceRung 1 of 8 · Established“GLP-1s like Ozempic and Wegovy are the easy way out — taking them is just cheating instead of doing the real work of diet and willpower.”Misleading value judgment, not a medical fact
- Strong evidenceRung 1 of 8 · Established“Ozempic ruins your metabolism — once you take it, your metabolism is permanently damaged and you'll gain all the weight back (and then some) the moment you stop.”Misleading overstatement
- Strong evidenceRung 1 of 8 · Established“You can just stop taking it once you hit your goal weight.”Misleading overstatement
- Strong evidenceRung 2 of 8 · Supported but limited“You lose mostly muscle on GLP-1s, not fat.”Mostly false — you lose mostly fat, but some lean loss is real
- Strong evidenceRung 1 of 8 · Established“You have to take it forever — it's a life sentence.”Mostly true on the biology, loaded in the framing — obesity is chronic, so stopping usually brings regain
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Sources
Every claim on this page traces to a primary source — and we sell you nothing. No sponsors, no affiliate links, no ads.
- 1 FDA labels
- 1 news / agency