Is GLP3 the same as retatrutide?

Yes, GLP-3 is a nickname for retatrutide (LY3437943), not a separate drug. There’s no natural hormone called GLP-3. The name comes from retatrutide’s three targets: it’s a triple agonist of the GIP, GLP-1 and glucagon receptors. Research suppliers often list it as GLP-3R, as we do with our GLP-3R 10mg vial. The name is informal, and scientific papers use retatrutide or LY3437943.

Retatrutide is investigational and not FDA approved. In its phase 3 TRIUMPH-1 trial of 2,339 adults, weight loss reached up to 28.3% at 80 weeks. It works very differently from eloralintide, which targets amylin receptors rather than incretin receptors. Our eloralintide vs GLP-3R comparison covers both side by side. Shop eloralintide for amylin research.