Multi-tier sizing on Retatrutide (10/30/40/60mg), Tirzepatide (10/30/60mg), SS-31 (10/30/50mg), and MOTS-c (10/20/40mg)Vendor profile
Certified Peptides
Multi-tier sizing on Retatrutide (10/30/40/60mg), Tirzepatide (10/30/60mg), SS-31 (10/30/50mg), and MOTS-c (10/20/40mg)Bioregulator collection per Khavinson protocols (Crystagen, Cardiogen, Pancragen, Vilon, Bronchogen, Pinealon)Pre-mixed blend formulas — KLOW, GLOW, BPC-157+TB-500, CJC+Ipamorelin (two ratios), Cagrilintide+SemaglutidePublic COA library surfaced in the site navMulti-format catalog spanning injectable peptides, oral capsules, and lipotropics (only injectables indexed by Stacked)
Stacked Score
71
/ 100StrongCertified Peptides is an operational vendor with a public per-batch COA library verified from an accredited third-party CRO. The vendor offers a catalog of 56 peptide listings and accepts credit card payments. However, there is limited community engagement on platforms like Reddit and Trustpilot, with most signals coming from YouTube. The vendor has no known FDA warnings or regulatory issues.
15YOUTUBE
Score Breakdown
- Purity Testing20%85/100
- Community Reputation15%62/100
- FDA / Regulatory13%85/100
- Shipping & Fulfillment12%60/100
- Payment Security10%65/100
- Customer Service10%60/100
- Catalog Depth10%80/100
- Price Competitiveness10%65/100
Evidence
Pros & Cons
Pros
- Strong third-party testing posture — vendor brands itself around "rigorous third-party testing in leading U.S. laboratories" and maintains a public COA library page surfaced in the site nav (most vendors we track don't expose a public COA repository)
- Four-tier Retatrutide sizing (GLP3-R: 10 / 30 / 40 / 60 mg) and three-tier Tirzepatide (GLP2-T: 10 / 30 / 60 mg) — the 60mg single-vial sizes are uncommon at any price tier
- Three-tier SS-31 sizing (10 / 30 / 50 mg) and three-tier MOTS-c (10 / 20 / 40 mg) — multi-tier mitochondrial / longevity options researchers running scaled protocols can use without buying multiple vials
- Six bioregulator SKUs (Crystagen, Cardiogen, Pancragen, Vilon, Bronchogen, Pinealon) — depth in Khavinson-protocol research compounds rare at most peptide vendors
- Six pre-mixed blend formulas — KLOW, GLOW, BPC-157+TB-500, CJC+Ipamorelin (5/5 + 10/10), and a Cagrilintide+Semaglutide GLP-stack — alongside single-vial SKUs
Cons
- Oral peptide capsules and lipotropic injections are listed alongside injectable peptides — researchers focused on a single delivery format may need to filter manually
- Per-batch independent COA data (Janoshik / Finnrick / equivalent specifically) not surfaced in the public copy — Certified's own COA library exists but the third-party lab provider isn't named
Specialties
Multi-tier sizing on Retatrutide (10/30/40/60mg), Tirzepatide (10/30/60mg), SS-31 (10/30/50mg), and MOTS-c (10/20/40mg)Bioregulator collection per Khavinson protocols (Crystagen, Cardiogen, Pancragen, Vilon, Bronchogen, Pinealon)Pre-mixed blend formulas — KLOW, GLOW, BPC-157+TB-500, CJC+Ipamorelin (two ratios), Cagrilintide+SemaglutidePublic COA library surfaced in the site navMulti-format catalog spanning injectable peptides, oral capsules, and lipotropics (only injectables indexed by Stacked)
Payment Methods
Credit card
Shipping
- Domestic
- Standard carrier shipping
- International
- No
- Tracking
- Yes
- Carriers
- —
Testing Methodology
Vendor states all peptides undergo "rigorous third-party testing in leading U.S. laboratories" and maintains a public COA library page accessible from the site nav. The specific lab provider (Janoshik / Finnrick / equivalent) is not surfaced in the customer-facing testing copy.
FDA Warning History
No FDA warning letters on record.
Product Catalog
Every product we track from Certified Peptides, linked to its peptide research profile. Prices refreshed periodically — verify on the vendor site before ordering.
Certified Peptides — Frequently Asked
- Is Certified Peptides legit?
- Certified Peptides is a research-peptide vendor tracked in the Stacked directory, holding an independent Stacked Score of 71/100. Our score weighs third-party testing, reputation, transparency, and shipping — see the full breakdown above. No FDA warning letters are on record for Certified Peptides as of our last review.
- What is Certified Peptides's Stacked Score?
- Certified Peptides holds a Stacked Score of 71/100. Certified Peptides is an operational vendor with a public per-batch COA library verified from an accredited third-party CRO. The vendor offers a catalog of 56 peptide listings and accepts credit card payments. However, there is limited community engagement on platforms like Reddit and Trustpilot, with most signals coming from YouTube. The vendor has no known FDA warnings or regulatory issues. The score is editorial and independent of our affiliate relationship.
- Does Certified Peptides third-party test its peptides?
- Vendor states all peptides undergo "rigorous third-party testing in leading U.S. laboratories" and maintains a public COA library page accessible from the site nav. The specific lab provider (Janoshik / Finnrick / equivalent) is not surfaced in the customer-facing testing copy.
- Does Certified Peptides ship internationally?
- Certified Peptides ships within the US. Typical domestic delivery runs Standard carrier shipping. Tracking is provided. Confirm current shipping terms on the vendor's site before ordering.
- Has Certified Peptides received any FDA warning letters?
- No FDA warning letters are on record for Certified Peptides as of our last review. We surface any that appear on the vendor profile.
Affiliate Disclosure
Disclosure
Stacked earns a commission on purchases via affiliate links on this page. This does not influence our Stacked Score methodology.