Vendor
Vial (mg)
Price ($)
$/mg
$/mg$6.00
$/mg$7.00
$/mg—
— Ranking · cheapest per mg first
- BESTVendor A10 mg · $60.00$6.00/mgbaseline
- #2Vendor B5 mg · $35.00$7.00/mg+16.7%
Working out how long one vial lasts and what each dose costs is the vial calculator. Cost is one of several tools on the site. See all tools.
Save this for every peptide
Pro saves your vendors and prices once, then shows the cost-per-mg ranking automatically on every peptide page, tracks inventory and reorder dates, and groups plans into stacks.
Common questions
What does cost per mg mean?
The price of a vial divided by the milligrams of compound in it. Shipping and card fees are not included.
Which compound is cheapest per mg?
Glutathione, a median of $0.05 per mg across 129 tracked vendors, last read Oct 24, 2026. Non-peptide compounds in the library are excluded from this comparison.
Which compound is most expensive per mg?
ACE-031 (Ramatercept), a median of $131.99 per mg across 19 tracked vendors, last read Oct 24, 2026. Non-peptide compounds in the library are excluded from this comparison.
Why does the same compound vary so much between vendors?
Matrixyl (Palmitoyl Pentapeptide-4) has the widest typical spread, from $0.14 to $9.03 per mg across the middle 80% of listings. Vial size is the main reason; larger vials usually cost less per mg. The rest is the seller. A high price does not mean a purer product and a low price does not mean an impure one; only a certificate of analysis says what is in the vial.
Are these prices verified purchases?
No. They are read from each vendor's public product page on the date shown. Nobody bought the vial.