Vendors sell Semaglutide in different vial sizes — 5mg, 10mg, 15mg, even 30mg. A vendor selling a 10mg vial for $70 looks cheaper than one selling 5mg for $39, but per milligram the 5mg option is actually cheaper at $7.80/mg vs $7.00/mg. That's why we normalize everything to cost per milligram.
Discount codes also make a huge difference. Most vendors offer 10-50% off with affiliate codes. We've applied every known discount in the table below so the prices shown are what you'd actually pay.
All prices shown are after discount codes applied. Sorted by lowest price per mg.
| # | Vendor | Price (after discount) | Size | $/mg | COA Tested | Code |
|---|---|---|---|---|---|---|
| 🥇 | Ion Peptides | $33.15 | 5mg | $6.63/mg | ✅ Yes | Glowlab |
| #2 | EZ Peptides | $43.20 | 10mg | $4.32/mg | ✅ Yes | GlowLab |
| #3 | LA Peptides | $58.49 | 5mg | $11.70/mg | — No | Glowlab |
| #4 | Mile High Compounds | $62.99 | 10mg | $6.30/mg | ✅ Yes | Glowlab |
| #5 | NuraPeptide | $58.65 | 10mg | $5.87/mg | — No | Glowlab15 |
| #6 | Glacier Aminos | $67.49 | 15mg | $4.50/mg | ✅ Yes | Glowlab |
| #7 | AtomiK Labz | $84.15 | 10mg | $8.42/mg | ✅ Yes | Glowlab15 |
Glacier Aminos offers the best $/mg at $4.50/mg on their 15mg vial — plus they have the most comprehensive third-party testing of any vendor (HPLC, LC-MS, KF Moisture, and Endotoxin testing). Use code Glowlab for 10% off.
Not all vendors test their products equally. Third-party Certificate of Analysis (COA) testing verifies purity and identity independently. For research purposes, COA documentation matters.
Vendors with full COA testing: Ion Peptides (HPLC + Mass Spec on every batch), Glacier Aminos (most comprehensive — 4-panel testing), EZ Peptides (QR code on every product links directly to the COA), Mile High Compounds (Kovera Labs certified), and AtomiK Labz (Finnrick verified).
A real COA should show HPLC purity percentage, molecular weight confirmation via mass spectrometry, and ideally endotoxin testing. A COA that just says "99% pure" without the chromatogram data is not meaningful.
Every vendor on this list accepts affiliate discount codes. Most give 10-15% off — Ascension Peptides gives 50% off with code Glowlab. Never buy without a code.
A 15mg vial at $75 is a better deal than a 5mg vial at $30. Always divide the after-discount price by the mg to get the true cost. Our price tracker does this automatically.
Ascension Peptides frequently runs out of stock on Semaglutide. If a vendor shows OOS, check back in a few days — their prices are often the most competitive when they restock.
Use PepsTracker's 🔔 Alert feature to get notified when Semaglutide drops below your target price. Prices change daily.
Prices update every day. Check the current cheapest option right now.
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