Guides › GLP-1 tracking guide › GLP-1 Side Effects Diary: Log Symptoms to Share With Your Prescriber · Updated 26-10-2026
GLP-1 side effects diary: log how you feel, share the pattern
A side effects diary is a short daily or weekly note of symptoms such as nausea, constipation, reflux or tiredness, scored on a simple scale and linked to your dose dates. It turns “I’ve felt a bit rough” into a clear pattern you can discuss with your prescriber. It does not replace medical advice.
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Important: this page is about record-keeping only. It does not give medical or dosing advice. Always follow the plan your prescriber or pharmacist gave you, and the leaflet that comes with your medicine.
What to log
- Date, and how many days since your last dose.
- Symptoms you are tracking, each scored 0 (none) to 5 (severe).
- Context: meal size, fluids, sleep, anything unusual that day.
- What you did and whether you contacted anyone, for example your pharmacist.
Linking symptoms to your dose day
The most useful column is “days since dose”. After a few weeks you may see, for example, that a symptom peaks one or two days after injecting and fades by day four. If your prescriber changes your dose, the diary shows how things changed after that date. Calculate it with:
=A2-MAXIFS(Doses!A:A,Doses!A:A,"<="&A2)
where column A holds the diary dates and the Doses sheet column A holds your injection dates.
Keep it short
A diary you fill in for 30 seconds a day is better than a detailed one you give up after a week. Pick three or four symptoms that matter to you and add others only if they appear.
When not to wait for the diary
A diary is for patterns, not emergencies. Your medicine’s leaflet lists symptoms that need urgent attention; follow it and contact a doctor or emergency services when it says to.
Bring it to your appointment
Print the last few weeks or a summary: average scores per week, worst days and dose dates. Together with your injection site log and weigh-ins, this gives your prescriber the full picture. See the GLP-1 tracking guide for everything worth logging.
Ready-made
The GLP-1 Medication & Weight Loss Tracker includes a side-effects log on a 0–5 scale next to doses, weight and measurements, and prints a one-page doctor-visit summary.
FAQ
Which side effects should I track?
The ones you notice or that your prescriber asked you to watch. Common entries are nausea, constipation, diarrhoea, reflux and tiredness.
Can the diary tell me if a symptom is serious?
No. Follow your medicine’s leaflet and contact a healthcare professional if you are worried.
Does it work in Google Sheets?
Yes, in both Excel and Google Sheets.
Related guides
- Start here: How to track GLP-1 medication and weight loss: what to log and why
- Injection site rotation log: remember where you injected last week
- Mounjaro weight loss tracker spreadsheet: log injections, weight and side effects
- All guides
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