Retatrutide — Vendor Comparison

A triple agonist targeting GIP, GLP-1, and glucagon receptors. Among the most promising next-generation weight loss peptides in clinical development.

Rankings based on our Vendor Transparency Score — COA publishing, lab accreditation, batch traceability, and published policies.See our methodology →
We earn commissions from some vendors below. This doesn't affect our rankings — they're determined by Vendor Transparency Scores alone.Full disclosure →

How We Score Transparency

Public COA AccessCore evidenceCertificates of Analysis visible on site with batch-specific results
Batch TraceabilityCore evidenceCOA batch numbers match product labels and packaging
Named Testing LabCore evidenceTesting lab is named and independently verifiable
Policy PagesSupporting trustDedicated refund and/or shipping policy pages
Identifiable OwnershipSupporting trustNamed founders, registered business, or physical address
Methodology v2.0 · Last updated Mar 14, 2026Full methodology →
Dosage:
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10 vendors
IP
Ion PeptidesIn Stock
A
Published
COAs
2025
Est.
$59.00
$5.90/mg
NP
NuScience PeptidesIn Stock
A
Published
COAs
2003
Est.
$139.00
$13.90/mg
EP
Eternal PeptidesIn Stock
B
Published
COAs
2024
Est.
$99.99
$10.00/mg
SL
Strate LabsIn Stock
B
Published
COAs
2019
Est.
$129.99
$13.00/mg
EB
Evolve BiopepIn Stock
C
Published
COAs
2025
Est.
$45.00
$4.50/mg
PP
Planet PeptideIn Stock
C
None
COAs
2021
Est.
$60.00
$6.00/mg
AL
Atomik LabzIn Stock
C
Published
COAs
2024
Est.
$109.00
$10.90/mg
PPC
Precision Peptide CoIn Stock
C
Published
COAs
2023
Est.
$119.99
$12.00/mg
PP
Polaris PeptidesIn Stock
C
Published
COAs
2024
Est.
$120.00
$12.00/mg
PP
Penguin PeptidesIn Stock
C
Published
COAs
2025
Est.
$132.00
$13.20/mg