Anyone who has been on a GLP-1 medication for more than a few weeks learns the same lesson: the dose is not the whole story. What actually shapes the experience is the pattern around the dose – which day you injected, which site you used, how the following seventy-two hours felt, and what happened to appetite and hydration in between. That pattern is very hard to hold in your head, and almost impossible to reconstruct from memory when a clinician asks about it three months later.

Why a simple written record beats recall. Most GLP-1 schedules are weekly, which sounds easy until a holiday, a late pharmacy refill, or a travel day shifts things by two days. Once that happens twice, people genuinely cannot say whether they are on week nine or week eleven of a titration. A record that shows the actual injection dates – not the intended ones – makes a dose escalation decision far less guesswork.

Three things worth writing down every time. First, the date and the amount, in milligrams, exactly as drawn. Second, the injection site, rotated deliberately; clustering injections in one area is one of the more common causes of stubborn local irritation. Third, a one-line note on side effects, scored roughly from one to five. Nausea that is a two in week three and a four in week six is a signal; nausea remembered vaguely as "bad sometimes" is not.

What the record is actually for. Titration decisions are the obvious use, but the quieter benefit is catching plateaus honestly. Weight moves in steps, not a line, and a four-week flat stretch looks like failure in the mirror and like a normal plateau in a table of numbers. Having the numbers makes it much easier to hold a dose steady rather than escalating out of frustration.

Storage and expiry belong in the log too. Pens have a room-temperature window once opened, and it is shorter than most people assume. Noting the date a pen came out of the fridge prevents the common mistake of using one well past its usable window and then attributing a weak response to the dose.

A notebook does this perfectly well. If you would rather have the arithmetic – next dose dates, cumulative totals, side-effect trends – handled for you, a free tracker such as GLP-1 dose tracking app keeps the same information in a structured form and works on a phone at the moment of injection, which is when a log actually gets filled in.

Whatever the format, the discipline is the same: record it at the time, keep it boring, and bring it to your next appointment.