Tirzepatide — Vendor Comparison

A dual GIP and GLP-1 receptor agonist originally developed for type 2 diabetes. Now widely studied for its effects on weight management and metabolic health.

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 →
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13 vendors
IP
Ion PeptidesIn Stock
A
Published
COAs
2025
Est.
$49.00
$4.90/mg
SP
Simple PeptidesIn Stock
A
Published
COAs
2023
Est.
$65.10
$6.51/mg
PC
Peptide CraftersIn Stock
A
Published
COAs
2024
Est.
$90.00
$9.00/mg
SP
Skye PeptidesIn Stock
A
Published
COAs
2023
Est.
$105.00
$10.50/mg
NP
NuScience PeptidesIn Stock
A
Published
COAs
2003
Est.
$114.00
$11.40/mg
N
NexaphIn Stock
B
Published
COAs
2024
Est.
$19.50
$1.95/mg
AOP
Alpha Omega PeptidesIn Stock
B
Published
COAs
2024
Est.
$65.10
$6.51/mg
EP
Eternal PeptidesIn Stock
B
Published
COAs
2024
Est.
$74.99
$7.50/mg
PP
Planet PeptideIn Stock
C
None
COAs
2021
Est.
$50.00
$5.00/mg
PP
Polaris PeptidesIn Stock
C
Published
COAs
2024
Est.
$99.00
$9.90/mg
AL
Atomik LabzIn Stock
C
Published
COAs
2024
Est.
$99.00
$9.90/mg
PP
Penguin PeptidesIn Stock
C
Published
COAs
2025
Est.
$104.00
$10.40/mg
P
PureRawzIn Stock
C
Published
COAs
2017
Est.
$247.06
$24.71/mg