Dosing & injections
Missed a dose of semaglutide or tirzepatide? What to do
October 2, 2026 · 6 min read · Medically reviewed by Bryan Milton, MD · Reviewed October 2, 2026
What the approved labels say about a missed weekly dose, the one rule that matters most, and why doubling up to catch up is the thing not to do.
A missed weekly injection is one of the most common things that happens on a GLP-1, and the answer is usually simple. The approved labels anticipate it and describe a window: if the next scheduled dose is still far enough away, take the missed one; if it is close, skip it and resume on schedule.
What do the labels say?
For semaglutide injections, the labels instruct that a missed dose be administered as soon as possible within a stated number of days after the missed dose, and otherwise skipped, with the next dose taken on the regular day. For tirzepatide, the labels give a window of up to a stated number of days, after which the dose is skipped and the schedule resumed.
The numbers differ between the two molecules, and they differ because the dosing intervals and half-lives differ — which is exactly why this article does not print a number for you to apply. Your prescription label states the window for your medication, and a compounded preparation's instructions may differ from an approved product's. Check yours, or ask.
The one rule that matters most
Do not take two doses to catch up, and do not take a double dose. This is the thing that turns a missed injection into a problem. The commonly reported side effects of these medications cluster around dose increases, and a doubled dose is a dose increase you have given yourself without anyone monitoring it. Nausea and vomiting are the mild version; dehydration and its consequences are the version that ends up in urgent care.
What if I am past the window?
Skip it and take your next dose on your normal day. Missing one weekly dose is not an emergency and does not reset your treatment. What matters is not compounding the miss by improvising.
| Situation | What the labels describe |
|---|---|
| You remember within the window on your label | Take the missed dose, then resume your normal schedule |
| You are past the window | Skip it; take the next dose on your regular day |
| You have missed several in a row | Contact your care team before restarting |
| You are not sure which applies | Message your care team before injecting |
What if I have missed several weeks?
Then it is a conversation, not a calculation. After a longer gap a clinician may want to restart at a lower dose and step up again, because tolerability can reset — the same reason the labels titrate in the first place. Do not resume at the dose you were on without asking.
How do I stop missing doses?
- Pick a day that is reliably yours and set a recurring reminder on it.
- Keep the medication somewhere you will see it, within its storage instructions.
- Inject at a time of day that fits the week you actually have, not the one you plan.
- Tell your care team if the day you chose is not working — the labels allow the day to be changed within limits, and that is a better fix than repeated misses.
Your own prescription label and the instructions that came with it are the authority on your medication. A compounded preparation can differ from an approved product in concentration, storage and beyond-use date, so where this article and your label disagree, the label wins — and your care team can settle anything unclear.
This article is educational and is not a substitute for personalized medical advice. Whether any medication is appropriate for you is a decision for a licensed clinician who has reviewed your health history.