Peptide Library

Peptide Library is an independent research hub for peptides. It brings together the reference material, the math and the price data that people researching peptides usually have to piece together from forums, vendor sites and spreadsheets, and puts them in one place on the web and in apps for iOS and Android.

Research library. The library has profiles for more than 200 peptides. Each profile lists key facts such as CAS number, molecular weight, half-life, FDA status and the level of evidence behind it, along with the names the compound is also known as and the pathways it targets.

Reconstitution calculator. Enter the vial size and the amount of bacteriostatic water you add, and the calculator gives the concentration, the volume to draw and the matching units on a U-100 syringe, along with how many doses one vial holds. A blend mode handles two or more peptides in one vial, and a cost mode turns a vial price into the cost per dose and per milligram.

Vendor price comparison. Prices from public vendor listings are compared per milligram. Each vendor counts once, at the median of its own listings, and the collection dates are shown next to every price. Peptide Library does not sell peptides itself.

Tracking in the apps. The iOS and Android apps add dose logging, vial and inventory tracking, schedules and reminders.

Pricing. The library, the calculator and the vendor comparison are free on the web and need no account. Peptide Library Pro ($4.99 a month, $39.99 a year or $89.99 lifetime) unlocks more in the apps.

All content is for research and educational use only and is not medical advice.