How to track peptide cycles properly

By Tessaro Pty Ltd, the maker of Pepti · Reviewed

A cycle is only useful if you can see it afterwards. Most people who lose track do not lose track of the compound — they lose track of what they actually did, and when. This is a guide to the record, not to the protocol.

What a cycle is, structurally

Whatever the compound, a cycle has the same shape: a period where you are injecting, followed by a period where you are not, sometimes repeated. The “on” weeks are obvious to log. The “off” weeks are the ones people skip, and that is the mistake. An off period with no record looks identical to a period you simply forgot to write down, so when you come back to your notes you cannot tell rest from gap. Log both. A single line saying “off, week three” is enough to make the whole history readable.

What to record for every injection

Why paper and notes apps fail

They fail at the exact moment you need them. The failure has a name: the double-dose problem. You inject, get distracted before you write it down, and an hour later cannot remember whether the entry you are looking at is from today or yesterday. Paper has no timestamp. A notes app has one, but it is buried, and nothing stops you from typing a second entry. The record that works is one where logging the injection is a single tap that cannot happen twice for the same slot, and where “did I already do today?” is answered by looking, not remembering.

The second failure is quieter. Paper and notes do not do arithmetic. They will not tell you that your current vial has two draws left, or that you have used the same site four times this fortnight. Those are the two facts that matter most mid-cycle, and a flat list of text hides both.

Site rotation as cycle hygiene

Repeated injections into the same spot cause thickened, rubbery tissue that absorbs unpredictably, which quietly changes how the same routine behaves from week to week. Rotating sites in a fixed sequence is part of keeping a cycle consistent, not a separate topic. The injection site rotation guide sets out an eight-zone system and how to move through it; your log just needs to record which zone each injection went into so the sequence is never left to memory.

Reconstitution maths as vial management

Every new vial is a new concentration, and a new concentration means every draw figure you had in your head is wrong. Treat reconstitution as part of the cycle record: note the water volume you added, the resulting concentration, and the draw volume per dose, then count doses down from there. The reconstitution guide explains the working, and the reconstitution calculator converts the values you already have into a draw volume and doses-per-vial so the count starts correct.

This guide describes record-keeping only. It does not recommend any compound, dose, or schedule.

The Pepti tracking app logs each injection in one tap, blocks the double entry, tracks what is left in every vial, and tells you which site is next.

Not medical advice. Pepti is a record-keeping and measurement tool, not a medical device.

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