Guide

How to track peptide injections: what to record.

A good injection log is a handful of facts written down the same way every time. This guide lists nine things to record for each injection and why each one earns its place, with a checklist you can print.

Vialist does arithmetic on numbers you give it. It does not give dosing advice. Everything here is about record keeping, for illustration only, so use the dose your prescriber gave you and the instructions on your product label or from your pharmacist.

Why keep an injection log

A log answers the small questions that come up again and again: when was the last injection, which vial was it from, which site did I use, and what did I notice afterwards. It also gives your prescriber or pharmacist something concrete to look at. This guide covers what to write down. It says nothing about how much to inject or how often, because that comes from your prescriber and your product label.

What to record for each injection

Date and time. The day and the clock time of each injection. A dated record answers "when was the last one?" without relying on memory, and it shows gaps and doubled-up days at a glance.
Compound or product. The name as it is printed on the vial, pen or pharmacy label. If you keep more than one product, the name is what keeps their entries apart.
Amount, in mg, mcg or IU. The amount your prescriber gave you, in the unit on your label. Units of measure are easy to mix up: 1000 mcg is 1 mg, and IU is a different kind of measure that does not convert to mg. Writing the unit next to the number keeps the record clear.
Units drawn on the syringe. The number you pulled on the syringe, and the scale (for example U-100). Syringe units measure volume, not dose. Having the amount and the units side by side makes a mix-up easy to spot later. The mg to units guide shows the arithmetic.
Vial and concentration. Which vial the injection came from, the amount in it, the water added and the concentration. Concentration is the amount in the vial divided by the water added, and every draw depends on it. If a vial is replaced, the record shows which concentration applied to which injection. See how to reconstitute a vial.
Injection site. Where on the body you injected. Labels for some products say to rotate sites, and you can only rotate if you know where you went last. See injection sites and rotation.
Lot number and expiry date. Both are printed on the vial or the box. If a question about a product comes up, you can say exactly which one you used, and you can see when a vial passes the date on its label.
Side effects, with the date. Anything you notice after an injection, in your own words, and when it started. Your prescriber or pharmacist can only act on what they hear about. A dated list is easier to share than a memory. This guide does not say which effects matter, so tell your prescriber or pharmacist about any you notice.
Notes. A missed or late injection, a dose that was spilled or lost, a new vial opened, travel. The unusual days are the ones you will want to explain later.

A printable checklist

Print this page and only the checklist below comes out, without the menus and the sidebar. Use your browser's print command, or Share and Print on a phone.

Injection log: one line for each item

Date and time
Compound or product
Amount, in mg, mcg or IU
Units drawn on the syringe
Vial and concentration
Injection site
Lot number and expiry date
Side effects, with the date
Notes

From vialist.io/guides/track-peptide-injections/

How Vialist Log records each item

If you would rather not keep a paper log, Vialist Log is a local-first iPhone app that records each of these items and does the unit math. It has no account and no server, so the log stays on your phone.

Where each item goes in Vialist Log
Item	In Vialist Log
Date and time	Each logged dose has its own date and time, and doses taken several times a day each get their own reminder and log.
Compound or product	Each protocol is for one compound. Multi-compound blends, nasal sprays by the spray, pens and oral doses are covered too.
Amount	You enter the dose you and your provider decided on. Vialist does not suggest an amount.
Units drawn	The units to draw on the syringe come first, with the mg, the mL and the syringe size underneath.
Vial and concentration	Vials count down as you log doses. The reconstitution math turns the vial amount, the water added and the dose into the units to draw. Pro adds a runs-out forecast.
Injection site	A front and back body map: abdomen, love handles, thigh and shoulder on the front, back of arm, hip and glute on the back. It shows how recently you used each one.
Lot number and expiry date	Vial purchase details you choose to enter include the lot number and the purchase and expiry dates. Pro can print a vial label with a QR code.
Side effects	Daily check-ins include side effects, next to mood, energy, sleep and more. You can choose which fields go into a shared summary, or into the Pro doctor report.
Notes	An optional instruction note on each protocol, and a Record a loss action that takes a failed or spilled syringe out of stock without counting it as a dose.

Vialist is in TestFlight beta. Some features, such as the runs-out forecast, the doctor report and printable vial labels, are part of the optional Vialist Pro. See the about page for what is free.

Check before you save an entry

Is the unit written next to every number?
Does the vial in your record match the vial in your hand?
Have you noted the site, so the next injection can use a different one if your label says to rotate?
If something felt off, is it written down with the date so you can tell your prescriber or pharmacist?

Vialist Log does this automatically

Vialist Log records the date, the units drawn, the vial, the site and your check-ins on your phone, with no account and nothing sent to a server.

Join the beta on TestFlight