What is retatrutide?
Retatrutide is a research peptide with the code name LY3437943. Eli Lilly developed the first version of it.
It is called a triple agonist because it binds and switches on three different receptors:
- GLP-1 receptor. GLP-1 stands for glucagon-like peptide-1.
- GIP receptor. GIP stands for glucose-dependent insulinotropic polypeptide.
- Glucagon receptor. Glucagon is another natural hormone.
That third receptor is what sets it apart: semaglutide binds one receptor, tirzepatide binds two and retatrutide binds three.
How researchers use retatrutide
- Triple receptor work. Labs measure how one molecule binds three targets at once.
- Signal studies. Studies track the chemical signals a cell sends after each receptor turns on.
- Metabolic research. Nearly all lab work with it falls in this field.
- Compound comparisons. Studies compare it with semaglutide and tirzepatide.
What we stock
We carry quality tested retatrutide as a sealed 20 mg vial of dry powder. You can order it on our Retatrutide Canada 20 mg vial page.
It sits in our research peptide range, next to semaglutide and tirzepatide.
We also stock mixing supplies, including bacteriostatic water and needles and syringes, or you can browse the full store.
Shipping in Canada
We ship across Canada, and delivery takes 3 to 7 business days.
Orders go out by Canada Post or Federal Express, with tracking on every order. Orders over $399 CAD ship free.
Every box is plain and unmarked, and the label says nothing about what is inside. You can pay by Interac e-Transfer at checkout.
Common questions
Can I get retatrutide in Canada?
Yes. It is sold here as a research compound only.
What kind of compound is it?
It is a triple receptor agonist peptide that acts on GLP-1, GIP and glucagon receptors.
How is it different from tirzepatide?
Tirzepatide acts on two receptors, and retatrutide adds the glucagon receptor as a third.
What does LY3437943 mean?
It is the lab code name for retatrutide, and you will see it in study papers.
How does it ship?
In a plain, unmarked box with tracking. Delivery takes 3 to 7 business days.
Sold for laboratory research only. Not for human consumption.
