Retatrutide – Research Peptide (GLP-1 / GLP-3)
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Current-lot production with ≥99% purity verified by independent HPLC/MS and a batch-specific COA posted on-page. Mannitol-free, lyophilized vials shipped from U.S. inventory—no legacy or warehouse-aged stock.
From $120.00
Buy Retatrutide Peptide (LY3437943) – Research Vials 10–30 mg
BulkGLP supplies Retatrutide (LY3437943) as mannitol-free, lyophilized research vials (10 mg, 15 mg, 20 mg, 30 mg) for qualified laboratories.
Each production lot is verified to ≥99% purity by independent third-party HPLC/MS, and a current Certificate of Analysis (COA) is published directly on this product page for batch verification.
No clinical, diagnostic, or therapeutic claims are made or implied.
Product Overview
BulkGLP is a U.S.-based Retatrutide supplier focused on research customers.
Orders are fulfilled from U.S. inventory with batch documentation available directly on this page.
Purchase through this listing provides access to current lots, including single vials and 10-pack options for ongoing studies.
Batch & Supply Format
- ≥99% purity verified by independent third-party HPLC/MS
- Mannitol-free (no bulking agents or buffers)
- Lyophilized peptide format (research vials)
- Singles and 10-packs available
- COA transparency: posted on-page for the active lot
- U.S. domestic fulfillment with appropriate packing
What Is Retatrutide (LY3437943)?
Retatrutide (LY3437943) is a synthetic triple-agonist peptide studied in metabolic and receptor-signaling research models for simultaneous activity at:
- GLP-1 receptor — incretin-pathway signaling models
- GIP receptor — complementary incretin signaling research
- Glucagon receptor — energy-balance and lipid signaling models
Supplied for in-vitro/ex-vivo research by qualified laboratories; not for administration to humans or animals.
Mechanistic Overview
- GLP-1 axis: receptor-mediated signaling models and glucose dynamics research
- GIP axis: glucose-dependent signaling pathways and incretin synergy research
- Glucagon axis: lipid mobilization and energy-expenditure pathway modeling
Research Evidence Snapshot
Published preclinical and Phase 2 literature describes metabolic endpoints associated with triple-agonist peptides compared to single- and dual-agonist incretin approaches.
Researchers should review primary sources for protocol design, model selection, and methodological details applicable to their work.
Retatrutide vs Tirzepatide vs Semaglutide
| Feature | Retatrutide | Tirzepatide | Semaglutide |
|---|---|---|---|
| Agonism | Triple: GLP-1, GIP, Glucagon | Dual: GLP-1, GIP | Single: GLP-1 |
| Research Focus | Combined receptor-pathway signaling models | Incretin pathway research | GLP-1 axis signaling models |
| Design Notes | Includes glucagon-axis activity in research models | Well-characterized dual incretin profile | Single-pathway incretin agent |
Why BulkGLP
- ≥99% purity: verified by independent third-party HPLC/MS
- Mannitol-free: no bulking agents or buffers
- Lot transparency: current COA posted on-page
- Lot-consistent availability: singles & 10-packs for ongoing studies
- U.S. fulfillment: domestic inventory and reliable shipping
Format & Handling
- Form: Lyophilized peptide (research vial)
- Fill options: 10 mg, 15 mg, 20 mg, 30 mg
Product Specifications
- Name: Retatrutide
- Synonyms: LY3437943
- Purity: ≥99% (independent third-party HPLC/MS)
- Molecular Formula: C₂₂₁H₃₄₂N₄₆O₆₈
- Molecular Weight: ~4,731.33 g/mol
- Additives: None (mannitol-free)
- Intended use: In-vitro/ex-vivo research only
Storage & Stability
- Unreconstituted: Store dry and light-protected
- After reconstitution: 2–8 °C; aliquot to reduce freeze-thaw cycles
- Shelf life: 4 years
Regulatory & Safety
All products are supplied for laboratory and scientific research. Products are not approved for human or veterinary use.
End users are responsible for compliance with institutional requirements and applicable laws. Purchase constitutes acceptance of these terms.
Retatrutide FAQ
- What vial sizes are available?
- Retatrutide research vials are available in 10 mg, 15 mg, 20 mg, and 30 mg fills.
- Is this fulfilled from within the USA?
- Yes. Orders are fulfilled from U.S. inventory with appropriate packing for the shipment route.
- Do you provide a Certificate of Analysis (COA)?
- Yes. A current, batch-specific COA is posted on this product page for verification.
- Are 10-packs available for ongoing studies?
- Yes. Single vials and 10-pack options are available so labs can match quantities to study design.
| Weight | 0.1 lbs |
|---|---|
| Dimensions | 2 × 2 × 2 in |
| Size | 5mg, 10mg, 15mg, 20mg, 30mg, 5mg – 10 Pack, 10mg – 10 Pack, 15mg – 10 Pack, 20mg – 10 Pack, 30mg – 10 Pack |
2 reviews for Retatrutide – Research Peptide (GLP-1 / GLP-3)
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Katy –
Observations in my research have been impressive so far. The compound appears to strongly influence appetite-related pathways and significantly reduce cravings in testing environments, even during periods when cravings are typically elevated. After about 30 days of consistent research, measurable progress was recorded. Very satisfied with the quality and purity of this Retatutrid and will continue future research.
Raptor14 –
Excellent quality compound. Unlike others I’ve tested, this one delivers consistent results without any unexpected issues during research. Very satisfied with the purity and overall experience will continue future research projects with this supplier.