Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.
Semaglutide
Best Semaglutide Vendors of 2026
Ranked by Price, Purity, and Reputation
5 vendors comparedfrom $3.40/mgCOA-verified sources only
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Quick Comparison
1Nura PeptideCOA
10/1010mg$6.90/mg
2Ascension PeptidesCOA
9.8/105mg$11.80/mg
3Ion PeptideCOA
9.5/10$3.45/mg
4Glacier AminosCOA
9.3/1015mg$3.60/mg
5EZ PeptidesCOA
9/10$3.40/mg
| Rank | Vendor | COA | Score | Doses |
|---|---|---|---|---|
| 1 | Nura Peptide | Yes | 10/10 | |
| 2 | Ascension Peptides | Yes | 9.8/10 | |
| 3 | Ion Peptide | Yes | 9.5/10 | |
| 4 | Glacier Aminos | Yes | 9.3/10 | |
| 5 | EZ Peptides | Yes | 9/10 |
Bulk Pricing
Per-vendor quantity breaks — pick a vial size to see the bulk price. Must purchase the full pack.
Nura PeptideCOA30% code thepeptidecatalog
as low as $4.35/mg$621.0010mg × 10$6.21/mg → $4.35/mg with code
View at Nura PeptideAscension PeptidesCOA
as low as $5.31/mg$531.005mg × 10$10.62/mg → $5.31/mg auto-applied
View at Ascension PeptidesIon PeptideCOA15% code thepeptidecatalog
as low as $2.20/mg$517.5020mg × 10$2.59/mg → $2.20/mg with code
View at Ion PeptideGlacier AminosCOA10% code thepeptidecatalog
as low as $2.43/mg$404.9015mg × 10$2.70/mg → $2.43/mg with code
View at Glacier AminosEZ PeptidesCOA10% code thepeptidecatalog
as low as $2.75/mg$310.0010mg × 10$3.10/mg → $2.79/mg with code
View at EZ PeptidesCompare More Peptide Vendors
How We Score Vendors
Our scoring is based on three weighted factors:
Price Competitiveness (40%)
Normalized to cost per milligram for fair comparisons across vial sizes.
COA Availability (30%)
Third-party lab testing confirming purity, identity, and absence of contaminants.
Vendor Reputation (30%)
Community feedback, shipping reliability, customer service, and business track record.