Track peptides, GLPs & custom stacks — see the science behind every dose.
Log single shots or multi-compound blends and PeptideBuddy models each compound's half-life to show how much is still active in your body right now, project clearance, and chart steady-state accumulation — all backed by real pharmacokinetic data.
Educational tool. Not medical advice. Always consult a qualified clinician.
Log doses in seconds
Pick from a catalog of GLP-1/GIP/triple agonists and popular peptides — or add your own custom compound with its own PK values. Record amount, time, route and injection site.
Half-life burn-down
A one-compartment PK model (absorption + first-order elimination) shows what's still circulating, projects when you'll be cleared, and reveals steady-state accumulation.
Build custom stacks
Take a blend like BPC-157 + TB-500? Log them together and save it as a reusable stack. Each component is still tracked on its own half-life — and re-logged in one tap.
Re-dose & edit instantly
One-tap “log again” for any dose or stack, inline editing of every history entry, and quick notes so you never lose track of how a shot felt.
Track your results
Log weight and waist over time and chart the trend right alongside your GLP-1 therapy, so you can connect dose changes to real outcomes.
Private & secure
Sign in with email & password, a magic link, or Google. Your dosing log is scoped to your account only — nobody else can see it.
Your blends, modeled correctly.
Most trackers treat a blend as one number. PeptideBuddy keeps each compound on its own elimination curve — because BPC-157 and TB-500 don't clear at the same rate — then groups them so you can log, re-dose, and review the whole stack as a unit.
Start stacking- ✓ Save reusable blends with per-component doses
- ✓ One-tap re-log of an entire stack
- ✓ Independent half-life tracking per compound
- ✓ Add your own custom compounds to any stack