13 guides
Guides
Twelve guides on the mechanics of keeping an accurate record — the arithmetic, the units, the schedules and the habits. None of them recommends a compound, an amount or a schedule, because that is not what a log is for.
Getting started
Fundamentals
Reconstitution, explained
What reconstitution actually is, the three-step arithmetic behind every calculator, and where the errors come from.
9 min read
Reading an insulin syringe
What the marks on a U-100 barrel actually measure, why U-40 and U-50 exist, and how to avoid a tenfold error.
6 min read
Pens vs vials
Three formats, three different logging problems — and which one actually involves arithmetic.
6 min read
Every-N-day schedules
Why 'every 3 days' is not a weekly schedule, and why so many trackers cannot represent it.
5 min read
Practice
Injection site rotation
Why rotation is recorded rather than remembered, and how to build a pattern you will actually follow.
7 min read
Storage & expiry tracking
The two clocks on every vial, why only one of them is printed, and how to record the other.
6 min read
Missed & late doses
Why backdating is a feature rather than a workaround, and how to record gaps without corrupting the record.
5 min read
Logging side effects
How to record subjective data so it can be counted, compared and handed to a clinician.
6 min read
Travelling with injectables
Cold chain, documentation and sharps — the three things that go wrong away from home.
6 min read
Exporting & backing up
Why a log inside one app on one phone is one accident from gone — and what a real backup looks like.
5 min read
GLP-1
Reference
Frequently asked questions
Where should I start?
If you are setting up a log for the first time, read 'How to track a peptide cycle' — it covers the eight fields that make a record readable months later. If you are about to reconstitute your first vial, read 'Reconstitution, explained' first.
Do these guides tell me what to take?
No. Every guide here is about mechanics and record-keeping: units, arithmetic, schedules, sites, storage and export. None of them recommends a compound, an amount or a schedule.
Are the guides specific to PepCycle?
No. The principles apply whatever you track with, including a spreadsheet — we wrote a comparison of that too. Where PepCycle is mentioned it is to say how it handles a specific problem, not as a prerequisite.
Log it once, keep it forever
PepCycle turns the numbers on this page into a running record: every dose, vial, site and side effect in one place — stored on your iPhone and backed up to your own iCloud.
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