Published by Pep AI · Peptide tracker · Updated August 2026
GHK-Cu is usually supplied in considerably larger vials than the milligram-scale compounds it sits beside, which makes the arithmetic its own small problem: the same water volume produces a far more concentrated solution, and unit readings come out small enough that a misread costs proportionally more.
Pep AI handles that by keeping concentration per vial rather than per compound. Change the water volume on the next vial and every conversion updates — nothing carries over silently from a vial that was mixed differently.
Site rotation, schedule reminders and the full dose history work the same way they do for everything else you track, so GHK-Cu does not need its own separate system.
Built for vials that don't come in standard sizes
Research-supplied compounds vary in vial size between orders. Pep AI treats every vial as its own record.
Vial-by-vial tracking
Each vial carries its own amount, water volume, reconstitution date and doses remaining — nothing is assumed from the last one.
Doses & schedules
Daily, every-other-day, or fully custom. Get a reminder when it's time, log it in one tap, and your history builds itself.
Vials & reconstitution
Enter your vial and bacteriostatic water and Pep AI converts your dose into exact syringe units — no mixing math, no guessing.
Injection sites
Automatic site rotation so you always know where the last shot went and where the next one should go.
Estimated levels
See your estimated compound level rise and fall between doses, modelled from your schedule and published half-lives.
Pep Bot
An AI assistant with a research-literature retrieval pipeline. Ask what a compound is or how a half-life works — it won't tell you what to take.
Frequently asked questions
Can Pep AI handle large GHK-Cu vials?+
Yes. There is no vial size limit — enter whatever your vial actually contains and the calculator works from that figure. Larger vials simply produce a more concentrated solution for a given water volume, which the conversion accounts for.
Does it track how many doses are left in a vial?+
Yes. Pep AI counts down from the vial's total as you log doses, and shows how much remains alongside how long the vial has been reconstituted.
Does Pep AI give medical advice?+
No. Pep AI is a tracking and organisation tool, not a medical device. It does not recommend compounds, doses or schedules, and Pep Bot declines dosing questions. What to take stays between you and a qualified clinician.
