Terms of use

PeptideWiki is a free reference and a set of calculators for people who work with research peptides. It converts numbers you type in — concentration, volume, units, decay, cost — and it summarises published research figures. It sells nothing.

By using the site you agree to these terms. If you do not agree with them, do not use it.

Nothing here is medical advice, a recommendation, or an instruction for human or veterinary use. Most of the compounds described are research chemicals rather than approved medicines. A few are licensed medicines in some countries, and the compound page says so where that is true — but this site describes them the same way it describes everything else, as published research. Figures shown are what has appeared in that research; they are not amounts for a person to take.

No page on this site creates any professional relationship between you and anyone behind it. For care of a health condition, talk to a licensed clinician.

The chat assistant is generated by a large language model run by OpenAI. What you type in the chat box, along with the site's reference data, is sent to OpenAI so a reply can be produced. The calculators themselves send nothing anywhere and run entirely in your browser. The other things that leave your device are the per-message Cloudflare Turnstile check on this chat, and — only if you choose to sign in — your saved protocols, described under “Your data” below.

Its answers can be wrong. Models state incorrect things confidently, including numbers. Take every answer as a starting point and check it against the pages it links to and the sources listed there.

Do not type anything you would not want sent to a third party — in particular personal health details, contact details, or anything identifying. Chat requests are checked by Cloudflare Turnstile to keep automated abuse off the endpoint, and may be rate limited or refused.

You agree not to:

• present anything from this site as medical guidance, or use it to tell another person what to take;
• scrape, bulk-download, resell or republish the reference data as your own, or use the assistant endpoint from anything other than this site;
• try to break, overload or work around the limits on the site, including the abuse checks on the assistant;
• use the site where doing so would break the law that applies to you.

Saved pages are stored in your own browser and nowhere else. They never sync, signed in or not, and clearing site data clears them.

Saved protocols start in your browser too. Signing in is optional, and it does one thing: it copies your saved protocols to your account so they follow you between your own devices. That copy is real data leaving your browser — the name you gave a protocol, its compounds, amounts, schedule and dates are stored with our authentication provider (Clerk) as part of your user record. Staying signed out keeps all of it on the device.

Analytics only load if you accept them in the banner. Declining costs you nothing on this site.

Some links to vendors and to supplies are referral links, and this site may earn from them. As an Amazon Associate it earns from qualifying purchases through the supply links. That is disclosed in the footer of every page.

The site is provided as it is, with no warranty of any kind. Figures may be wrong, incomplete or out of date; half-life values for several short peptides are poorly studied, and the pages say so where that is true. There is no promise that the site stays available.

To the fullest extent the law allows, no one behind this site is liable for any loss, injury or damage arising from your use of it or of anything you read here. You are responsible for what you do with the numbers.