Semaglutide

Approved medicine

The FDA has approved a version of this as a medicine, so it has been through large studies in people.

Also called Ozempic / Wegovy / Rybelsus / NN9535

A long-acting copy of a gut hormone. Approved for type 2 diabetes and for weight loss, backed by large studies in people.

The basics

What is it?
A medicine that copies a gut hormone your body makes after eating, which lowers appetite and blood sugar.
What do we know?
A lot. Large studies in tens of thousands of people show clear weight loss and better blood sugar. It is an approved medicine.
What do we still not know?
What happens over decades of use, and how much weight comes back after stopping.

Can a doctor prescribe this?

Yes. Pharmacies are allowed to make it, so a doctor can write a prescription for it.

The FDA has approved a version of this as a medicine.

FDA approved as a finished drug, and the active ingredient is legally compoundable under 503A.

Official status: On the 503A bulks list. Checked 2026-07-01.

Lab suppliers we list: 4

Doses used in research

Taken word for word from the studies and trials listed on this page. This is not a recommendation and not a dose for anyone to take.

In human trials