Tirzepatide
$2.50/mg
lowest tracked
Tirzepatide is a synthetic peptide that acts as a dual agonist of the GIP and GLP-1 receptors.
14 vendorscheapest vial $149.99 · 60mg
Vendor
Variant
$/mg
Live · GLP-1 Price Tracker · Research Use Only
GLP-1 peptide price tracker
Side-by-side price comparison for GLP-1, GIP and glucagon receptor research peptides — Semaglutide, Tirzepatide, Retatrutide, Cagrilintide, Survodutide and Mazdutide. Prices normalized to dollars per milligram across 34 vendors.
Prices refreshed 2026-06-06
At a glance — lowest tracked $/mg
| Peptide | Vendors | Lowest $/mg |
|---|---|---|
| Tirzepatide | 14 | $2.50/mg |
| Semaglutide | 17 | $3.33/mg |
| Retatrutide | 15 | $5.17/mg |
| Mazdutide | 9 | $5.90/mg |
| Cagrilintide | 21 | $7.80/mg |
| Survodutide | 8 | $7.90/mg |
Semaglutide
$3.33/mg
lowest tracked
Semaglutide is a GLP-1 receptor agonist peptide — a modified analogue of the glucagon-like peptide-1 hormone.
17 vendorscheapest vial $99.99 · 30mg
Vendor
Variant
$/mg
Retatrutide
$5.17/mg
lowest tracked
Retatrutide is an experimental peptide that acts as a triple receptor agonist (GIP, GLP-1, and glucagon), under pharmaceutical development.
15 vendorscheapest vial $154.99 · 30mg
Vendor
Variant
$/mg
Mazdutide
$5.90/mg
lowest tracked
Mazdutide is an experimental peptide acting as a dual GLP-1/glucagon receptor agonist, under pharmaceutical development.
9 vendorscheapest vial $59.00 · 10mg
Vendor
Variant
$/mg
Cagrilintide
$7.80/mg
lowest tracked
Cagrilintide is a long-acting synthetic analogue of the hormone amylin, studied as an experimental compound, including in combination with semaglutide.
21 vendorscheapest vial $39.00 · 5mg
Vendor
Variant
$/mg
Survodutide
$7.90/mg
lowest tracked
Survodutide is an experimental peptide acting as a dual glucagon/GLP-1 receptor agonist, under pharmaceutical development.
8 vendorscheapest vial $79.00 · 10mg
Vendor
Variant
$/mg
Frequently asked
- What is the cheapest GLP-1 peptide by price per mg?
- Tirzepatide is the lowest-priced GLP-1 research peptide tracked, at $2.50/mg from Onyx Biolabs (as of 2026-06-06).
- How many vendors does Pep-Index track for GLP-1 peptides?
- Pep-Index tracks 34 vendors across 6 GLP-1 / incretin research peptides, ranked by price per milligram. For research use only.
About this page
Incretin and metabolic research peptides — GLP-1, GIP and glucagon receptor agonists studied in metabolic research. Compare prices by $/mg.
Prices are pulled directly from each vendor's storefront and normalized to dollars per milligram so differently-sized vials can be compared on equal terms. The "cheapest vendor" highlighted for each compound is whoever currently posts the lowest $/mg — not a recommendation, just the math.
For research use only. These compounds are not approved by the FDA for human consumption. This page is a price index, not medical advice. Always confirm current pricing on each vendor's site before purchase.
For research use only. Pep-Index does not score or endorse vendors and makes no health, efficacy, dosing, or safety claims about any compound listed.