Compounded in U.S. 503A / 503B pharmaciesThird-party tested — potency, sterility, endotoxinPrescribed only by licensed U.S. providersCold-chain packed · tracked shippingCertificate of Analysis on every lotNo research-use chemicals — prescription onlyCompounded in U.S. 503A / 503B pharmaciesThird-party tested — potency, sterility, endotoxinPrescribed only by licensed U.S. providersCold-chain packed · tracked shippingCertificate of Analysis on every lotNo research-use chemicals — prescription only

Retatrutide

Commonly chosen for: Advanced weight loss support

Retatrutide shown as a sealed single-dose glass vial with a silver crimp cap
Representative product image. Packaging is determined by the dispensing pharmacy and may differ.

What it is

Retatrutide targets three pathways rather than two. On top of reducing appetite, the third pathway helps your body burn more energy at rest and clear fat out of the liver. Trial results so far show the largest average weight loss of anything in this family. It is still in final-stage clinical trials and has not been approved yet.

How it works

Retatrutide targets three pathways rather than two. Alongside the GLP-1 and GIP routes that reduce appetite, it adds glucagon signalling.

That third pathway is the difference: it helps your body burn more energy at rest and clear fat out of the liver, on top of eating less.

Trial results so far show the largest average weight loss in this family of compounds. It remains in final-stage clinical trials and has not been approved.

Who it's typically for

  • People who have plateaued on single- or dual-pathway options.
  • People comfortable with a compound still in late-stage trials.
  • People who want triple-pathway metabolic support under supervision.

What to know before starting

Read this part properly

Common side effects

Gastrointestinal effects — nausea, vomiting, diarrhea, constipation — are the most reported, and can be more pronounced than with the dual-pathway options. Increased heart rate has also been reported in trials.

Who should avoid it

Not appropriate with a personal or family history of medullary thyroid carcinoma or MEN2, a history of pancreatitis, in pregnancy or breastfeeding, or with significant cardiac disease. Because it is investigational, your provider will weigh the limited long-term data with you.

Consult requirement

A video consult with a licensed provider is required before this can be prescribed.

This page is educational and is not medical advice. Nothing here is intended to diagnose, treat, cure or prevent any disease. Where you see the FDA-Approved Ingredient mark, the active ingredient is FDA-approved in at least one prescription medication. Products without it are prescribed based on your provider's clinical judgment and current research. Compounded preparations are not FDA-approved products in either case.

Often paired with

Questions people ask

More in Weight Loss & Metabolic Health

View the category

Semaglutide

FDA-Approved Ingredient

Weight loss, appetite control, blood sugar

Learn more

Tirzepatide

FDA-Approved Ingredient

Stronger weight loss, blood sugar control

Learn more

AOD-9604

Fat loss without full growth hormone effects

Learn more

Related reading

Ready to begin?

Start through the secure consultation workflow when the intake link becomes active.

Treatment is only available if determined medically appropriate by a licensed provider.

Find My PeptideShop →