# Missed a GLP-1 dose? Here's what each medicine's label says to do

> Forgot your weekly Ozempic, Wegovy, Mounjaro or Zepbound shot? The FDA labels give a specific rule for each — and Ozempic and Wegovy differ even though they're the same drug. Here's what each one says, plus when to just call your pharmacist.

**Evidence grade:** Established (rung 1 of 8 on the Peptide Evidence Ladder) · **Last reviewed:** 2026-07-02 · **Source page:** https://thepeptideera.com/evidence/glp1-missed-dose

## Short answer
If you miss a weekly GLP-1 injection, each medicine's FDA label gives its own rule — and they are not all the same, so check yours. Ozempic's label says take a missed dose as soon as possible within 5 days, and skip it if more than 5 days have passed. Wegovy's label says take it only if your next scheduled dose is more than 2 days away, and skip it if that's less than 2 days off. The Mounjaro and Zepbound labels (both tirzepatide) say take it within 4 days (96 hours), and skip it after that. In each case the label then has you resume your normal weekly day and take only the one dose — never two to catch up. Ozempic and Wegovy are the same medicine (semaglutide) but have different windows, which trips people up. A single missed dose isn't an emergency: this page reports what the labels say — it is not personal medical advice, and your pharmacist can confirm your medicine's rule in under a minute.

## Key takeaways
- Each medicine's label gives its own rule — check yours. Per the labels: Ozempic within 5 days; Wegovy only if your next dose is more than 2 days away; Mounjaro / Zepbound within 4 days. After the window, the label says skip it and resume your normal day.
- Ozempic and Wegovy are the same drug (semaglutide) but their labels give different windows (5 days vs 2 days) — a common source of confusion. Go by the label of the exact product you're prescribed.
- The labels don't have you take two doses to “catch up.” Whatever you do about the missed one, go back to your regular weekly day; doubling up raises the risk of side effects. And a single missed weekly dose is not an emergency.
- If it's been a while — roughly a few weeks or more — don't just restart your old dose. Tolerance can fade (and the higher the dose you were on, the more this matters), so check with your prescriber before restarting; a pharmacist can also confirm any missed-dose question in under a minute.

## Safety essentials worth knowing

These apply to GLP-1 and dual/triple-agonist medicines generally. They’re label-level points, not the full list, and not advice about you — your prescriber and the FDA label are the authority.

- **Pregnancy & breastfeeding:** these medicines are not recommended in pregnancy, and intentional weight loss is generally not advised in pregnancy; the labels advise stopping before a planned pregnancy. Breastfeeding status is a conversation to have with your clinician.
- **Birth control:** some of these medicines (such as tirzepatide) can make *oral* contraception less reliable. If you could become pregnant, ask about backup or non-oral contraception.
- **Thyroid boxed warning:** this drug class carries an FDA boxed warning (thyroid C-cell tumours seen in rodents) and is not for people with a personal or family history of medullary thyroid cancer (MTC) or MEN 2.
- **Blood sugar:** combined with insulin or a sulfonylurea, these medicines can cause low blood sugar — those other medicines often need prescriber-managed adjustment, not self-adjustment.
- **Eating disorders:** an appetite-suppressing medicine warrants particular caution with a current or past eating disorder; disclose this to your clinician.
- **Surgery, sedation & endoscopy:** because these medicines slow stomach emptying, tell your surgical or anaesthesia team you take a GLP-1 well in advance — they'll decide with you whether to continue or hold it (more: https://thepeptideera.com/evidence/glp1-and-surgery).

It happens to almost everyone eventually: the day gets away from you and you realize you forgot your weekly shot. The good news is that each of these medicines comes with a clear, official rule for exactly this, printed on its FDA label — and the honest surprise is that **the rules aren't all the same,** even between two products that contain the identical drug. This page lays out what each label says. It's education, not personal medical advice — and for a question this quick, **your pharmacist can confirm your medicine's rule in under a minute,** so when in doubt, call them.

## What each label says to do

These are the manufacturers' own missed-dose instructions from the current FDA labels for the **weekly injections.** In every case, once you've handled the missed dose you **go back to your normal weekly day.**

| Medicine | Drug | If you miss a weekly dose, the label says… |
| --- | --- | --- |
| **Ozempic** | Semaglutide | Take it **as soon as possible within 5 days.** If **more than 5 days** have passed, **skip it** and take the next dose on your regular day. |
| **Wegovy** | Semaglutide | Take it if your **next scheduled dose is more than 2 days away.** If it's **less than 2 days** away, **skip it** and resume your regular day. |
| **Mounjaro** | Tirzepatide | Take it **as soon as possible within 4 days (96 hours).** If **more than 4 days** have passed, **skip it** and resume your regular day. |
| **Zepbound** | Tirzepatide | Take it **as soon as possible within 4 days (96 hours).** If **more than 4 days** have passed, **skip it** and resume your regular day. |

## The catch: same drug, different rule

The part that trips people up: **Ozempic and Wegovy are the same medicine — semaglutide — but their missed-dose windows are different** (5 days for Ozempic, versus Wegovy's "only if your next dose is more than 2 days away"). Mounjaro and Zepbound are both tirzepatide and share the same 4-day rule as each other. So the reliable move isn't to remember a single number — it's to **go by the label of the exact product you were prescribed,** or ask your pharmacist. Don't assume a friend's Ozempic rule applies to your Wegovy.

Wegovy's wording specifically confuses people, because it's about time until your **next** dose, not time since you missed. A quick worked example: if your shot day is **Sunday** and you remember on **Friday**, your next dose is only 2 days away — the label says **skip it.** If you remember on **Tuesday**, your next dose is more than 2 days away — the label says **take it,** then carry on with Sunday as usual.

## Two rules that apply no matter which one you take

- **Never double up.** The labels tell patients not to take two doses close together to "make up" for a missed one — doubling up can increase nausea and other GI side effects. Handle the one missed dose per the rule above, then return to your normal weekly day. **A single missed weekly dose is not an emergency;** the worst move is doubling up to compensate.
- **On insulin or a sulfonylurea?** Ozempic and Mounjaro are also **diabetes** medicines, and are often taken alongside insulin or a sulfonylurea (like glipizide, glimepiride, or glyburide). Missing — or later restarting — a GLP-1 can move your blood sugar in **either** direction, so keep monitoring your glucose and ask your prescriber whether those other medicines need adjusting, especially after a gap.
- **A daily oral version follows a different rule entirely.** Don't apply the weekly-shot windows above to a daily oral tablet (such as an oral semaglutide) — oral products have their **own** missed-dose instructions on their label. Check that product's label, or ask your pharmacist.

## If it's been longer than a dose or two

The rules above are for a single missed weekly dose. If you've been **off the medicine for several weeks** — a lapse, a supply gap, a break — that's a different situation: your body's tolerance to the drug's GI effects can fade, and **restarting at your previous dose can bring back the early side effects** (the higher the dose you were on, the more this matters). Don't just pick up where you left off on your own. **Check with your prescriber or pharmacist about whether you need to [restart at a lower dose and build back up](/evidence/glp1-dosing-and-titration/)** — that's their call, not something to guess at.

## When to just ask

You never have to work this out alone. A **pharmacist** can answer a missed-dose question for your exact medicine in under a minute, and it's exactly the kind of thing they're there for. For anything about changing your dose or a long gap, that's your **prescriber's** call. For the bigger picture of starting out and side effects, see [what to expect on a GLP-1](/tools/what-to-expect) and the [GLP-1 side-effects page](/evidence/glp1-side-effects). As always, this page explains what the labels say so you can act on it with a professional — it doesn't replace their advice.

## Sources (4)
1. Ozempic (semaglutide) — FDA Prescribing Information via DailyMed (§2.1: missed dose within 5 days). — https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=adec4fd2-6858-4c99-91d4-531f5f2a2d79 [LABEL]
2. Wegovy (semaglutide) — FDA Prescribing Information via DailyMed (§2.4: missed dose — take if next dose >2 days away, otherwise skip). — https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b [LABEL]
3. Mounjaro (tirzepatide) — FDA Prescribing Information via DailyMed (§2.1: missed dose within 4 days / 96 hours). — https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=d2d7da5d-ad07-4228-955f-cf7e355c8cc0 [LABEL]
4. Zepbound (tirzepatide) — FDA Prescribing Information via DailyMed (§2.3: missed dose within 4 days / 96 hours). — https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=487cd7e7-434c-4925-99fa-aa80b1cc776b [LABEL]

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From The Peptide Era (https://thepeptideera.com) — evidence-graded, primary-sourced answers about GLP-1 medicines. Education, not medical advice. No doses, no sourcing.