Semaglutide — Vendor Comparison

A GLP-1 receptor agonist used for weight management and type 2 diabetes. One of the most studied peptides in the GLP-1 class.

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.
$59.50
$5.95/mg
SP
Simple PeptidesIn Stock
A
Published
COAs
2023
Est.
$65.10
$6.51/mg
PC
Peptide CraftersIn Stock
A
Published
COAs
2024
Est.
$99.00
$9.90/mg
SP
Skye PeptidesIn Stock
A
Published
COAs
2023
Est.
$119.00
$11.90/mg
NP
NuScience PeptidesIn Stock
A
Published
COAs
2003
Est.
$144.99
$14.50/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.
$69.99
$7.00/mg
SL
Strate LabsIn Stock
B
Published
COAs
2019
Est.
$99.95
$10.00/mg
PP
Planet PeptideIn Stock
C
None
COAs
2021
Est.
$45.00
$4.50/mg
PP
Penguin PeptidesIn Stock
C
Published
COAs
2025
Est.
$71.50
$7.15/mg
PP
Polaris PeptidesIn Stock
C
Published
COAs
2024
Est.
$90.00
$9.00/mg
PPC
Precision Peptide CoOut
C
Published
COAs
2023
Est.
$95.99
$9.60/mg
AL
Atomik LabzIn Stock
C
Published
COAs
2024
Est.
$99.00
$9.90/mg