How to Track Your GLP-1 Injections (and What's Actually Worth Logging)

A log earns its keep in the few minutes of your next appointment. Five things worth recording, three you can skip, and paper vs spreadsheet vs app.

GLP-1 treatment moves on a scale of months: doses step up one notch at a time while your body's responses shift week to week. Human memory is bad at exactly this kind of timescale. "How bad was the nausea in week three, really?" Two weeks later you can't answer that accurately. A log pays for itself in one place — the few minutes of your next appointment and whatever dosing decision follows it. Here's what's worth recording, what you can safely skip, and how to choose between paper, spreadsheets, and apps.

Why Log at All

Three reasons, in order of importance.

Real data for your doctor. Titration decisions — going up, holding, slowing down — rest on the full story of your treatment, and the story is only as good as its data. A page of records beats ten minutes of uncertain recall.

Answering the missed-dose question. Every label defines a window for making up a missed dose — whether you can take it at all depends on how long it's been since your last injection. That's not a rule you should have to memorize; a log answers it directly.

Spotting patterns. Do side effects always land on day two after an injection? Did a weight plateau coincide with the last dose increase? Patterns hide in data, and data hides in records.

The Five Things Worth Recording

1. Date and time — the anchor for every other analysis.
2. Dose (mg) — the central variable during titration, and the first thing your doctor asks about.
3. Injection site — pairs with site rotation so the same tissue never takes repeated hits.
4. Side effects and severity — your own scale (mild / moderate / severe) is fine; consistency matters more than precision.
5. Weight — once a week, same conditions (same time of day, same scale).

One practical addition: supply count. Note when you're down to two pens, and refills stop becoming a surprise discovered the night you open the fridge.

The Three You Can Skip

A log serves you, not the other way around:

• The exact minute of injection. Morning versus evening on the same day doesn't matter.
• Every bite you eat. Food journaling is a different discipline unless your doctor specifically asks.
• Daily weigh-ins. Body weight fluctuates naturally; daily numbers are mostly noise and anxiety. Weekly, consistent weigh-ins show the trend just fine.

Paper, Spreadsheet, or App

Paper: zero friction and naturally private, but no reminders, no aggregation, and one lost notebook means a lost history. Right for "I just need a ledger."

Spreadsheets: powerful for sorting and summing, but the friction of hand-maintaining one on a phone is why most of them get abandoned. Right for people who already live in spreadsheets.

A dedicated app: reminders, site rotation, supply counts, and export all become automatic. DoseLog, for example, is built around exactly the five items above — an injection cycle calendar, severity as plain dots, CSV export — and it runs entirely on-device, so health data never leaves your phone. Right if you want reminders and care about privacy.

Undecided? Start with how to choose a GLP-1 tracker app.

A Starter Template

This six-column table works on paper or in a spreadsheet, and you can start today:

References

• MedlinePlus — Semaglutide Injection
• DailyMed — Ozempic (semaglutide) prescribing information
• DailyMed — Wegovy (semaglutide) prescribing information
• DailyMed — Zepbound (tirzepatide) prescribing information

This article is general information, not medical advice. For missed doses and dose adjustments, your own prescription label and your doctor are the authorities.

Verified on 2026-09-03