GLP1Meter
Home / Side effects

GLP-1 tirzepatide side effects

You are dealing with a symptom and want to know if it is expected.

Reference and calculator, not medical advice. Dosing figures below are transcribed from FDA-approved prescribing information and link back to it. Last reviewed August 2026.

The list below is what appears in the prescribing information for GLP-1 receptor agonists as a class. It answers "is this documented", not "is this what I have".

Listed in the prescribing information

Common adverse reactions listed for GLP-1 receptor agonists as a class.

These products carry a boxed warning regarding thyroid C-cell tumours observed in rodent studies, and are contraindicated in people with a personal or family history of medullary thyroid carcinoma or MEN 2. Read the full prescribing information for your specific product and discuss it with your prescriber — this summary is not complete and is not a substitute for that document.

Zepbound titration schedule

Tirzepatide · once weekly · subcutaneous injection · as published in the prescribing information

StepDoseNotes
Weeks 1–42.5 mgStarting dose — not intended for weight loss effect
Weeks 5–85 mg—
Weeks 9–127.5 mg—
Weeks 13–1610 mg—
Weeks 17–2012.5 mg—
Week 21+15 mgMaximum dose

This is the labelled default. Holding at a step longer than shown is common practice and is a decision for your prescriber. Transcribed from the Zepbound prescribing information (label revised 6 May 2026); checked against that label on 7 August 2026.

Gastrointestinal effects are generally reported as worst in the days following a dose increase and easing as the body adjusts — which is the entire reason the schedule is stepped rather than immediate. That pattern is also why holding at a step, rather than pushing through, is such a common adjustment. Anything severe, persistent or unexpected warrants contacting your prescriber rather than searching for reassurance.

Sources and last review

Every dosing figure on this page is transcribed from an FDA-approved label and links back to it. Conversions are arithmetic you can repeat by hand. Nothing here is reviewed by a clinician, and this site does not employ one — which is exactly why what I do publish stays traceable to its source.

Transcribed from the labels above and checked by me — Gavin, who builds this site, takes a GLP-1, and is not a clinician. Last reviewed August 2026. Found an error? [email protected] — I treat corrections as bugs. How this site is built and funded.

Also searched as: glp 1 tirzepatide side effects · tirzepatide glp 1 side effects · tirzepatide glp-1 side effects

Related