// Weight Loss
Retatrutide
Triple agonist (GLP-1 + GIP + glucagon). Newer mechanism, strong early data.
- ✓Triple-pathway agonist · GLP-1 + GIP + glucagon
- ✓Highest reported weight-loss signal of compounded GLP-class options
- ✓Compounded under USP 797 sterile standards
- ✓Three vial sizes for titration and maintenance
Starting from
Sign-in required. A licensed physician reviews every prescription before it ships.
Read the full protocol ↓// All formulations
3 formulations available
For orientation only — your physician confirms the final protocol on the pharmacy storefront.
| Option | Size | Price |
|---|---|---|
| Introductory · 1 mL | 1 mL vial | $263 |
| Standard · 3 mL | 3 mL vial | $371 |
| Best value · 5 mL | 5 mL vial | $433 |
Compounded by Greenstone Rx · Florida 503A pharmacy
Continue to Pharmacy →// The science
About Retatrutide
Retatrutide is a triple agonist — activating GLP-1, GIP, and glucagon receptors simultaneously. In Phase 2 trials, retatrutide produced the largest average weight-loss signals to date. Compounded as an injectable at 20 mg/mL across three vial sizes for stepped titration.
// How it works
How it works
Retatrutide activates three receptors: GLP-1, GIP, and glucagon. The glucagon arm increases energy expenditure — your body burns more calories at rest — which differentiates it from the dual agonists.
// Who it's for
Who it's for
Patients who haven't reached their goal on tirzepatide or semaglutide. Those whose providers think additional metabolic-rate effect would help. Phase 2 trial data show some patients losing 24%+ at the highest doses.
// What to expect
Your timeline
Slow ramp over 4–8 months. Higher peak doses than other GLP-1s. Side-effect profile similar to tirzepatide; nausea on dose increases.
// Who should not take this
Who should not take this
Same family of contraindications as semaglutide and tirzepatide. As a newer molecule, screening is even more careful.
// Typical starting dose
Typical starting dose
A typical starting protocol is 2 mg once weekly, with slow titration over 4–8 months toward a higher peak dose than other GLP-1s. Suggestions only — your physician reviews and approves the final protocol before any medication ships.
// Ready when you are
Start your prescription.
You'll complete a short health screening on the pharmacy storefront. A licensed physician reviews every order before any medication ships.
Continue to Pharmacy →Compounded by a 503A licensed pharmacy pursuant to a valid prescription. Not an FDA-approved drug. Not intended to diagnose, treat, cure, or prevent any disease. Individual results vary. Full disclaimer.