Same product. Comparable prices.
The lowest effective price in stock for a Prostamax 20 mg vial is $55 ($2.75 per mg) at Peptides 4 Research, checked Oct 6, 2026, across 5 offers compared. 2 picks with a product COA on file.
Prices checked
Focused price comparison
Prices are recorded observations for the same product. Confirm the price and availability with the vendor before buying.
5 of 5 matching offers
Check the observation date beside each price. Prices and stock can change between checks; confirm both at the vendor.
2 picks for this product as of Oct 6, 2026. Picks are up to three of the lowest effective prices among vendors that passed the trust floor, were in stock and checked within 72 hours, and have a COA on file for this product and strength tested within the last 12 months. Fewer than three is normal. Affiliate relationships never affect picks or order. A COA shows the batch it names; it does not prove which lot a vendor ships today.
One-package prices require ordering one sellable package of the selected size. Bulk deals appear in the separate purchase-size view.
Effective prices include only verified automatic promotions or the selected verified coupon scenario. They exclude shipping and tax. Automatic promotions are not stacked with coupons unless the combined terms were verified. Sorting changes this table only; vendor grades and picks are unchanged.
| Vendor and trust | Listed price | Stock record | Price checked | Product |
|---|---|---|---|---|
| Peptides 4 Research Not enough information to gradeNot graded Below trust floorProduct COA on fileTested Feb 25, 2026 · BioAnalytical Laboratory, Inc. · ref 260752 · purity 99.75% · batch 260218PM203 Vendor-hosted copy · Lab site ↗ · SHA-256 c95b57c60a8c… | $55$2.75 / mgDeal not verified · listed price shown | In stock when checked | Price recorded on this date | Product link unavailable |
| Swiss Chems Grade C66/100 Below trust floorVendor tests other products97 public reports from this vendor, none matched to this product. | $59.95$3 / mgDeal not verified · listed price shown | In stock when checked | Price recorded on this date | Check offer ↗PepGrades earns nothing from this link. |
| AIO Peptides Not enough information to gradeNot graded Below trust floorVendor tests other products92 public reports from this vendor, none matched to this product. | $60$3 / mgDeal not verified · listed price shown | In stock when checked | Price recorded on this date | Check offer ↗PepGrades earns nothing from this link. |
| Core Peptides Grade B+80/100 Passed trust floorPick 1Product COA on fileTested Aug 21, 2026 · Vanguard Laboratory · ref V260706-2 · purity 98.95% · batch C73714 Vendor-hosted copy · Found on the product page by the weekly COA crawl · SHA-256 bd726b64d68c…1 older report on file for this product. | $63$3.15 / mg | In stock when checked | Price recorded on this date | Check offer ↗PepGrades earns nothing from this link. |
| Biolongevity Labs Grade B78/100 Passed trust floorPick 2Product COA on fileTested Oct 30, 2025 · BioRegen · ref BIOLABS2010 · purity 99.78% · batch 42-3-45937 Vendor-hosted copy · Lab site ↗ · SHA-256 3522974b4d60…1 older report on file for this product. | $79.97$4 / mgDeal not verified · listed price shown | In stock when checked | Price recorded on this date | Check offer ↗PepGrades earns nothing from this link. |
Saved comparisons
Save a package-price target here and check it when you return. Watches stay in this browser; no account or email alerts.
Prostamax 20 mg vial
No recent, available offer can be used for a target check.
Uses listed prices checked within 72 hours and recorded in stock. Coupons, shipping and tax are excluded. Confirm at the vendor.