Retatrutide 20mg
Triple-Agonist Metabolic Peptide — 20mg Vial
Compound Overview
Retatrutide (LY3437943) is an investigational triple receptor agonist peptide targeting GIP, GLP-1 and glucagon receptors simultaneously. This 20 mg vial is the higher-capacity format of our best-selling Retatrutide 10mg, intended for research programs running longer in-vitro studies or larger assay panels that would otherwise consume multiple 10 mg vials. The current lot is independently verified at 99.643% purity by HPLC, with 24.51 mg of assayed content against a 20 mg label.
Price: $140 CAD per 20 mg vial — $7.00 per mg, against $9.00 per mg on the 10 mg vial. Two 10 mg vials cost $180; a single 20 mg vial costs $140, so you save $40 and keep the study on one verified lot. Shipping is free and tracked across Canada with no minimum order.
Lab results: View current batch COA
For a full scientific overview, see our Retatrutide Canada Research Guide.
Specifications
| Compound | Retatrutide (LY3437943) |
| Compound class | Triple receptor agonist peptide — GIP / GLP-1 / glucagon |
| CAS number | 2381089-83-2 |
| Molecular formula | C221H342N46O68 |
| Molecular weight | 4,731.42 g/mol |
| Vial contents | 20 mg lyophilized powder (24.51 mg assayed) |
| Price | $140 CAD ($7.00 per mg) |
| Verified purity | 99.643% (HPLC) |
| Testing laboratory | Janoshik Analytical |
| Test methods | HPLC purity + net content quantification |
| Storage | Lyophilized: -20°C long-term, 2-8°C short-term. Protect from light. |
| Research applications | Triple-agonist receptor pharmacology, glucagon/GLP-1/GIP signalling comparison, extended-duration in-vitro receptor-binding and activation assays |
| Key reference | Jastreboff et al., NEJM, 2023 — Phase 2 triple-agonist trial (LY3437943) |
| Other vial sizes | Retatrutide 10mg — $90 · Retatrutide 30mg — $180 |
| Ships from | British Columbia, Canada — free tracked shipping, no minimum |
| Intended use | In-vitro laboratory research only |
Purity & Third-Party Testing+
Every batch is independently tested by a third-party analytical laboratory before release. The current 20 mg lot was assayed by Janoshik Analytical at 99.643% purity by HPLC, with 24.51 mg of net content against a 20 mg label. View current batch COA →
How much does Retatrutide 20mg cost in Canada?+
Retatrutide 20mg is $140 CAD per vial from ThePeptide.ca, which works out to $7.00 per milligram. For comparison, our Retatrutide 10mg vial is $90 CAD ($9.00/mg) and the Retatrutide 30mg vial is $180 CAD ($6.00/mg). Shipping is free and tracked to every province and territory in Canada with no minimum order value, so the listed price is the delivered price before tax.
Should I buy one 20mg vial or two 10mg vials?+
The 20 mg vial is cheaper. Two 10 mg vials cost $180; one 20 mg vial costs $140 — a $40 saving, and $7.00 per milligram against $9.00. The only reason to prefer two smaller vials is if you want a sealed backup held in cold storage while the first is in use. For a single continuous study, the 20 mg vial is both cheaper and keeps everything on one verified lot.
How does shipping work in Canada, and is it free?+
Shipping is free on every order, Canada-wide, with no minimum order value, and every parcel is tracked. All orders ship from British Columbia, Canada.
- Processing: Dispatched within 48 hours (Mon-Fri)
- Delivery: Typically 2-8 business days anywhere in Canada
- Tracking: A tracking number is emailed as soon as your order ships
Vials ship in temperature-stable, tamper-evident, discreet unbranded packaging. View full shipping policy →
Storage & Handling+
Retatrutide is supplied as a lyophilized (freeze-dried) powder for maximum stability. Unopened lyophilized vials should be stored at -20°C for long-term storage or 2–8°C short-term, and protected from direct light at all times. Keep in the original packaging until it reaches the laboratory.
For laboratory and research use only. Not for human consumption, veterinary use, or therapeutic application. Not approved by Health Canada. We do not provide preparation, dilution or administration guidance for any compound we sell.
- Sealed vial: −20°C, 24+ months.
- Protect from light and heat.
- Keep in original packaging until use in the laboratory.
- CAS: 2381089-83-2
- Molecular formula: C221H342N46O68
- Molecular weight: 4,731.42 g/mol
- Class: Triple GIP / GLP-1 / glucagon receptor agonist
- Purity: 99.643% (HPLC)
Not for human or animal use. We do not publish preparation, dilution or usage guidance of any kind.
By purchasing, you confirm research intent and accept full responsibility for compliance.
Mix any research peptides 10 mg or larger — the discount counts your whole order, not one product.
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