Buy Retatrutide 15mg
Triple GLP-1/GIP/Glucagon agonist — −28.7% body weight in Phase 2 trials. The most potent fat-loss peptide on the market.
Product Specifications
- Chemical
- Triple GLP-1/GIP/Glucagon receptor agonist
- CAS Number
- 2381089-83-2
- Purity
- ≥98% HPLC verified
- Form
- Lyophilized powder
- Storage
- −20°C long-term / 2–8°C reconstituted
- SKU
- PG-1101
Why Buy Retatrutide 15mg from Peptide Scientists
Buying Retatrutide online means accessing the strongest weight-loss compound studied to date — well before any FDA approval. We source directly from Phiogen, a Reykjavík-based supplier with full HPLC purity verification (≥98%) on every batch.
Every order ships from US-side fulfillment with 1-2 day handling, free shipping over $200, and a 30-day return guarantee. No prescription required for laboratory use.
The 15mg vial is the standard starter for a full 8-week dose escalation cycle (2mg → 4mg → 8mg). It's the dose used in Eli Lilly's Phase 2 protocol and the most cost-effective entry point for new buyers.
About Retatrutide 15mg
Retatrutide is a unimolecular triple agonist activating GLP-1, GIP, and glucagon receptors simultaneously. The third receptor (glucagon) drives direct hepatic fat oxidation and brown adipose thermogenesis — adding mechanisms that semaglutide and tirzepatide cannot replicate.
Phase 2 data published in NEJM (Jastreboff et al., 2023) showed mean weight loss of −28.7% at the 8mg/week dose over 48 weeks, with the dose-response curve still climbing at trial endpoint. This is the largest weight reduction recorded in any GLP-class trial.
Side effect profile mirrors other GLP-1 agonists: GI events (nausea, reduced appetite) are dose-dependent and concentrated during escalation. Co-administration with BPC-157 is the standard mitigation in research protocols.
Key Features
- Triple agonist (GLP-1 + GIP + Glucagon) — three fat-loss mechanisms in one molecule
- −28.7% mean body weight loss at 48 weeks (Phase 2, 8mg dose)
- Standard 8-week dose escalation starter vial
- ≥98% HPLC verified purity, lyophilized powder
- Free US shipping over $200
Frequently Asked Questions
Is it safe to buy Retatrutide online?
How much does Retatrutide cost compared to Ozempic?
What dose should I start with?
How fast will my order ship?
Related Products
BPC-157 + TB-500 Blend 20mg
Buy BPC-157 + TB-500 Blend 20mg online — research-grade lyophilized peptide for laboratory use. Body Protection Compound-157 (15-amino-acid pentadecapeptide). ≥98% HPLC purity verified.
CAS: 137525-51-0
Laboratory Use Only. This product is sold for in-vitro laboratory use. Not for human consumption, injection, or therapeutic application. Consult applicable regulations in your jurisdiction.
Retatrutide 15mg
$199.99