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  • 🇺🇸 USA Domestic
  • Research Compounds
    • Research Peptides
      • Anti-Aging & Longevity Peptides
      • Cognitive & Nootropic Peptides
      • Cosmetics Peptides
      • Performance & Hormone Optimization Peptides
      • Recovery & Healing Peptides
      • Weight Loss & Metabolic Peptides
    • Peptide Blends
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  • QSC
    • About QSC
      • QSC Price List
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FREE standard shipping on all orders.
≥99% Purity Verified • COA on Every Product
Free Shipping on All Orders • FedEx 2Day in USA 🇺🇸
Domestic Warehouses: 🇺🇸 🇪🇺 🇬🇧 🇦🇺 🇨🇦

Retatrutide 20mg | 20-Vial Kit | Triple Agonist GIP/GLP-1/Glucagon

QSC Retatrutide (Triple GLP-1R/GIPR/GCGR agonist (LY3437943)) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Domestic Warehouses (USA/EU/UK/AU/CA)

$550

or
SKU: QSC-RETATRUTIDE-20MG-20VIAL
Categories: Research Peptides, Weight Loss & Metabolic Peptides
Brand: QSC
Technical Specs & COA
PubMed
Disclaimer & Storage Guide

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS5-Region Domestic Shipping

What is Retatrutide?

Retatrutide (Triple GLP-1R/GIPR/GCGR agonist (LY3437943)) is a 39-amino acid triple-receptor peptide. Triple receptor co-agonist simultaneously activating GLP-1R, GIPR, and GCGR. GCGR activation adds thermogenesis, fatty acid oxidation, and hepatic glucose production modulation beyond dual GIP+GLP-1 agonism. Phase 2 (NEJM 2023): 24.2% mean weight reduction at 48 weeks (12mg dose).

Research Applications

Triple Receptor Pharmacology

GLP-1R + GIPR + GCGR co-agonism, additive receptor biology

GCGR Research

Isolated GCGR contribution vs tirzepatide (dual) in parallel arms

Obesity Models

Phase 2 NEJM 2023 reference — 24.2% weight reduction

Thermogenesis

GCGR-mediated fat oxidation and energy expenditure

NASH/Liver

Hepatic GCGR signalling and liver fat reduction

Quick Specs

Form Lyophilized powder
Purity ≥99% by HPLC — every batch
CAS Number Not publicly standardized
Molecular Formula Large synthetic peptide (sequence-specific; proprietary)
Peptide Type Triple Receptor Agonist (GLP-1 / GIP / Glucagon Receptors)
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house Fmoc SPPS — Qingdao, China
Storage -20°C sealed | 2–8°C reconstituted (2–4 weeks)
Shelf Life As indicated by manufacturer

Certificate of Analysis (COA)

QSC COA Report

✓ Verify on Janoshik ↗

🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA  ·  🇪🇺 EU  ·  🇬🇧 UK  ·  🇨🇦 Canada  ·  🇦🇺 Australia
🧬 PubMed Research — 20mg
Search PubMed ↗
1,467 publications found Last 10 years 3 most recent shown
41730373
Quantitative disintegration profiling using real-time erosion tracking during the standard USP〈701〉 test.
Lee J et al. · Int J Pharm 2026 View ↗
41795948
Safety, tolerability, and preliminary efficacy of seltorexant versus quetiapine extended release as adjunctive therapy in major depressive disorder: a randomized, flexible-dose, 6-month, parallel-group, exploratory study.
Pinter C et al. · Int J Neuropsychopharmacol 2026 View ↗
41773730
Targeting Semaphorin 7a signaling in preclinical models of endocrine therapy-resistant breast cancer.
Steinmetz RN et al. · Mol Cancer Ther 2026 View ↗

Showing 3 of 1,467 for 20mg

View all on PubMed ↗

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

📋

Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
🧪

General Safety & Handling

🚫

Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

🥽

PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

🌡️

Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

🗑️

Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

🧾

Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

❄️

Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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