What a 20 mg vial costs
Every vendor we track that lists this exact size, cheapest first. Sort order is price only; affiliate status never changes it.
Median $3.15, or $3.15 per mg, across the 7 vendors with an exact, in-stock price.
Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named
Sort by
- Liberty PeptidesProstamax 20mg$55.00
- Verified PeptidesProstamax$55.00
- BioEdge Research LabsProstamax$59.00
- American PeptidesPROSTAMAX$60.00
- Core PeptidesProstamax$63.00
- Core Peptides ResearchProstamax (20mg)$63.00
- Iron Peak PeptidesProstamax$65.00
- BioLongevity LabsProstamax (20mg)$79.97
- NuScience PeptidesProstamax Peptide 20mg$79.99
- Oath ResearchProstamax$80.00
| Vendor | Size | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| Liberty Peptides Prostamax 20mg | 20 mg | $55.00 | $2.75 | in stock | Aug 24, 2026 | View |
| Verified Peptides Prostamax | 20 mg | $55.00 | $2.75 | in stock | Aug 22, 2026 | View |
| BioEdge Research Labs Prostamax | 20 mg | $59.00 | $2.95 | listed | Aug 22, 2026 | View |
| American Peptides PROSTAMAX | 20 mg | $60.00 | $3.00 | in stock | Sep 12, 2026 | View°code ALYSSA108066 saves 10% |
| Core Peptides Prostamax | 20 mg | $63.00 | $3.15 | listed | Aug 22, 2026 | View |
| Core Peptides Research Prostamax (20mg) | 20 mg | $63.00 | $3.15 | in stock | Sep 12, 2026 | View |
| Iron Peak Peptides Prostamax | 20 mg | $65.00 | $3.25 | listed | Aug 22, 2026 | View |
| BioLongevity Labs Prostamax (20mg) | 20 mg | $79.97 | $4.00 | in stock | Sep 12, 2026 | View° |
| NuScience Peptides Prostamax Peptide 20mg | 20 mg | $79.99 | $4.00 | in stock | Sep 12, 2026 | View |
| Oath Research Prostamax | 20 mg | $80.00 | $4.00 | in stock | Sep 12, 2026 | View |
We earn from these links. It never changes a price or a position here.
- BioEdge Research Labs: Stock not shown, left out of the range
- Core Peptides: Stock not shown, left out of the range
- Iron Peak Peptides: Stock not shown, left out of the range