Guide

Tracking GLP-1 side effects

Last reviewed 2026-09-28 · 4 min read

If you take a GLP-1 medication, your prescriber will want to know about side effects: what they were, how bad, when they started, and how that lined up with your doses. A simple log answers all four.

What the labels list

Every GLP-1 medication comes with prescribing information and a Medication Guide listing its side effects and warnings. Read yours. For example:

• The Wegovy (semaglutide) label lists as most common: "nausea, diarrhea, vomiting, constipation, abdominal pain" among others (Wegovy prescribing information).
• The Zepbound (tirzepatide) label lists: "nausea, diarrhea, vomiting, constipation, abdominal pain, dyspepsia, injection site reactions" among others (Zepbound prescribing information).

Both labels carry a boxed warning about the risk of thyroid C-cell tumors. What any symptom means for you, and what to do about it, is for your prescriber. If something feels severe, contact them or seek urgent care.

What to record for each side effect

• What it was — in your own words, or from a list
• How bad — a simple scale, the same one every time
• When it started, and how long it lasted
• Your last dose — what and when
• Anything you noticed alongside it — a note is enough

How Stack helps

• Side-effect log: pick from a list or type your own, rate each one 1–5, and link it to a compound.
• Dose log: every dose with its time, so the timing is already there.
• The report: one PDF for any date range with your doses and your side effects by category and severity, to take to your prescriber.

Stack records what happened. It does not tell you what a symptom means, whether to change a dose, or how to treat anything. See the semaglutide and tirzepatide library pages, or read the GLP-1 tracking guide for the bigger picture.

Questions