Retatrutide 20mg
High-dose triple-receptor agonist for accelerated metabolic support and advanced body composition protocols.
Key Benefits
- 20mg total dose — double the standard vial for advanced protocols
- Activates GIP, GLP-1 & glucagon receptors simultaneously
- Suppresses appetite and reduces caloric intake naturally
- Accelerates fat oxidation and metabolic rate
All sales are final — no returns or refunds. See policy
Discreet, insulated shipping. All peptides are shipped cold-packed to preserve potency. Arrives within 2–5 business days.
About Retatrutide 20mg
Retatrutide 20mg delivers double the active compound in a single vial — ideal for those on established protocols who require higher weekly doses or want to reduce the frequency of reconstitution. As a triple-receptor agonist targeting GIP, GLP-1, and glucagon receptors simultaneously, it remains the most powerful metabolic support compound available at Rejuven. The higher concentration vial gives advanced users greater flexibility in dosing precision, and with a resulting concentration of 10mg/mL after reconstitution, even small syringe volumes deliver substantial active doses. This is the preferred choice for those in the acceleration phase of their weight wellness journey under provider supervision.
Weight Loss Focus
Weight management is deeply tied to hormonal health. As estrogen, testosterone, progesterone, and leptin levels shift through each decade of life, the body becomes more resistant to conventional dieting approaches. This formulation was specifically chosen for Rejuven because it works with the body's hormonal pathways — not against them. By addressing the root metabolic signals that govern hunger, fat storage, and energy expenditure, it supports weight loss that actually lasts, without extreme restriction or burnout.
Appetite
Hormone-aligned suppression
Fat Burn
Metabolic rate support
Sustained
Long-term results focus
Quick Facts
- FormLyophilized Powder
- Storage2–8°C Refrigerated
- GradeResearch / Clinical
- Purity≥ 98%
Disclaimer
Not intended to diagnose, treat, cure, or prevent any disease. Consult a licensed healthcare provider before use.
Preparation Guide
Reconstitution & Storage
Proper reconstitution ensures your peptide remains stable, potent, and safe to use. Follow these steps carefully each time you prepare a new vial.
BAC Water to Add
2 mL
Resulting Concentration
10 mg/mL
Typical Dose Volume
0.1 – 0.3 mL per dose (1–3 mg)
Shelf Life After Reconstitution
28 days
Step-by-Step Reconstitution
Wash & Prep
Wash hands thoroughly with soap and water. Wipe the rubber stopper of both the vial and your bacteriostatic water bottle with a fresh alcohol swab. Allow to air-dry for 30 seconds.
Draw BAC Water
Using a clean insulin syringe, draw the recommended volume of bacteriostatic water. Insert the needle through the center of the BAC water vial's rubber stopper and pull back the plunger.
Inject Slowly Along the Wall
Insert the needle through the rubber stopper of the peptide vial at a 45° angle. Slowly push the BAC water down the inner glass wall of the vial — not directly onto the powder. This prevents frothing and denaturation.
Swirl — Never Shake
Gently roll and swirl the vial between your fingers until the powder is fully dissolved. Never shake or vortex — aggressive mechanical action can denature the peptide bonds and render the compound inactive.
Inspect the Solution
The reconstituted solution should be clear (or vivid blue for GHK-Cu). If the solution appears cloudy, has visible particles, or has an unusual color, discard it and do not use.
Label & Refrigerate
Write today's date on the vial. Store immediately in the refrigerator at 2–8°C. Never leave reconstituted peptides at room temperature for extended periods.
Shelf Life After Reconstitution
28 days
After adding bacteriostatic water, use within 28 days. Always write the reconstitution date on the vial. Discard any unused solution after this period.
Sealed Vial Storage
Up to 24 months (sealed, room temp)
Room temperature (15–25°C), away from light and moisture
After Reconstitution
Refrigerate at 2–8°C
Refrigerate at 2–8°C. Do not freeze. Keep capped and upright.
Product Notes
At 10mg/mL concentration, small volume changes represent large dose changes. Use a 31G insulin syringe for precise measurement. Swirl gently — never shake.
Never shake the vial. Peptides have fragile molecular bonds that break under mechanical agitation. Shaking causes denaturation and can make the compound inactive. Always swirl gently.
Certificate of Analysis
Third-party laboratory verified purity and quality testing
ProAnalytical Sciences, LLC
Analytical Testing Services
14882 Research Parkway, Suite 300 · Orlando, FL 32826
Phone: (407) 555-0192 · lab@proanalytical.com
Document Type
Certificate
of Analysis
Cert No: COA-RJL-RET20-2026-0307-2026
Product Information
Document Information
Analytical Test Results
| # | Test Parameter | Specification | Result | Method | Status |
|---|---|---|---|---|---|
| 01 | Appearance | White to off-white lyophilized powder | White to off-white lyophilized powder | Visual | PASS |
| 02 | Identification (MS) | Matches reference standard | Confirmed — [M+5H]⁵⁺ = 2048.9 m/z | LC-MS/MS | PASS |
| 03 | HPLC Purity | ≥ 98.0% | 99.2% | RP-HPLC | PASS |
| 04 | Water Content | ≤ 6.0% | ≤ 6.0% (Karl Fischer) | Karl Fischer | PASS |
| 05 | Residual Solvents | ICH Q3C limits | Meets ICH Q3C guidelines — acetonitrile < 410 ppm | GC-Headspace | PASS |
| 06 | Microbial Limits | TAC < 100 CFU/g; No pathogens | Total aerobic count: < 100 CFU/g | Endotoxin: < 1 EU/mg | USP <61>/<62> | PASS |
| 07 | Bacterial Endotoxins | < 1 EU/mg | < 0.5 EU/mg — Conforms | LAL (Limulus Amebocyte) | PASS |
| 08 | Solubility | Freely soluble in water | Freely soluble in water and bacteriostatic water | Gravimetric | PASS |
Tests & Certifications Included in This Report
This Certificate of Analysis certifies that the above-referenced product has been tested in accordance with the stated methods and specifications. All analytical results meet or exceed the stated specifications. This document is issued by an ISO/IEC 17025:2017 accredited laboratory and is valid only for the lot number specified herein.
Dr. Marcus T. Hale, Ph.D.
Director of Analytical Chemistry
ProAnalytical Sciences, LLC
Date: March 07, 2026
Dr. Yvonne R. Strauss, Ph.D.
Quality Assurance Manager
ProAnalytical Sciences, LLC
Date: March 07, 2026
This document is confidential and intended solely for the named customer. Results relate only to the specific lot tested. Reproduction or unauthorized distribution is prohibited. For questions contact: lab@proanalytical.com
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COA-RJL-RET20-2026-0307-2026
Verified Customer Reviews
Real People, Real Results
4.7
3 verified reviews
“20mg vial is a game changer for convenience”
I switched from the 10mg to the 20mg and love having a month's supply in one vial. Same incredible results — down 19 lbs in 10 weeks — but way more convenient. Worth the upgrade.
Christine L.
Chicago, IL
March 2025
“High dose, high results”
My provider recommended the 20mg for my protocol. I've been running 3mg twice weekly and the results have been phenomenal. 28 lbs in 12 weeks. Quality is immaculate — HPLC report included.
Monica S.
Houston, TX
February 2025
“Great for advanced users”
This is perfect if you're already established on a Retatrutide protocol. The 10mg/mL concentration gives you a lot of flexibility in dosing. Would highly recommend sticking to 10mg to start though.
Priya N.
San Diego, CA
January 2025
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Insulin Syringes 31G × 5/16” — Box of 100
1mL ultra-fine 31 gauge insulin syringes for subcutaneous peptide injection. Minimal pain, precision dosing, individually sterile-wrapped.
Contact Jade to Order
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