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Best Semaglutide Vendors of 2026
Ranked by Price, Purity, and Reputation
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Quick Comparison
1Ascension PeptidesCOA
10/105mg$8.00/mg
2Ion PeptideCOA
9.7/10$3.45/mg
3EZ PeptidesCOA
9.3/10$4.80/mg
4Glacier AminosCOA
9/1015mg$4.80/mg
| Rank | Vendor | COA | Score | Doses |
|---|---|---|---|---|
| 1 | Ascension Peptides | Yes | 10/10 | |
| 2 | Ion Peptide | Yes | 9.7/10 | |
| 3 | EZ Peptides | Yes | 9.3/10 | |
| 4 | Glacier Aminos | Yes | 9/10 |
Bulk Kits
Multi-vial kits at a lower $/mg — must purchase the full kit.
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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.