Missed Your GLP-1 Dose? What Each Label Actually Says

You open the fridge on Wednesday and realize Sunday’s shot never happened. Now what — inject immediately, skip to next week, double up?

The good news: this exact situation is covered in each medication’s FDA prescribing information, with specific time windows. Here’s what the labels say, in plain language. One rule above all: never take two doses to catch up, and when in doubt, call your pharmacist — they answer this question daily.

The missed-dose windows, by medication

Wegovy (semaglutide 2.4 mg, weekly)

The label uses your next scheduled dose as the reference point:

If the next scheduled dose is more than 2 days (48 hours) away → take the missed dose as soon as you can, keep your original schedule.
If the next scheduled dose is less than 2 days away → skip the missed one entirely and take the next dose on the regular day.
If you miss more than 2 doses in a row, the label says to either resume as scheduled or restart the dose-escalation schedule — a prescriber decision, not a solo one (see below for why).

Ozempic (semaglutide, weekly)

Simpler window: take the missed dose within 5 days. Past 5 days, skip it and take the next dose on the usual day.

Zepbound and Mounjaro (tirzepatide, weekly)

Take the missed dose within 4 days (96 hours). Past that, skip and resume on schedule. The label also requires at least 3 days (72 hours) between two doses if you’ve shifted days.

Why the windows exist

These drugs have half-lives of roughly five to seven days — long enough that a dose taken a couple of days late still keeps blood levels in a reasonable range, and long enough that missing one week doesn’t zero you out. The windows are drawn where a late dose stops smoothing the curve and starts stacking too close to the next one.

What happens after a longer gap

This is the part people underestimate. After two or more missed weeks, medication levels have fallen far enough that your gastrointestinal tolerance partially resets. Jumping straight back in at your full dose can reproduce the worst nausea of your early titration — sometimes worse. That’s why the Wegovy label explicitly raises restarting escalation after multiple missed doses, and why supply-gap and insurance-gap restarts belong in a conversation with your prescriber rather than a fridge decision.

Practical corollary: a gap is data worth recording. When your prescriber asks “how has the medication been working?”, the honest answer sometimes is “there was a three-week insurance gap in April” — appetite rebound, weight bounce, and a rough restart all trace back to it. If your dose log shows the gap (this is exactly what Glu’s dose history is for), nobody has to reconstruct it from memory in a 15-minute appointment.

How to stop missing doses

The people who never face this question aren’t more disciplined — they’ve made shot day automatic:

Anchor it to an existing weekly fixture (Sunday-evening routine, Saturday coffee).
One reminder, honored strictly. A reminder you snooze four times trains you to ignore it. Set it for a time you’re reliably home with the fridge.
Log at injection time, so “did I take it?” always has an answer. The uncertainty is worse than the miss — an unlogged shot is a coin-flip between skipping a week and doubling.

The shot day checklist covers the full five-minute routine.

When it’s more than logistics

Repeatedly “forgetting” sometimes isn’t forgetting — it’s side effects you’re dreading, cost pressure, or ambivalence about the treatment. All three are legitimate and all three have better solutions than silent skipping (dose adjustments, nausea management, manufacturer savings programs, or a candid conversation about whether this medication is right). Skipped doses deliver the side-effect risk of treatment without the results.

Sources: Wegovy prescribing information (Novo Nordisk, §2.2 missed dose); Ozempic prescribing information (Novo Nordisk); Zepbound prescribing information (Eli Lilly, §2.4). Label details change — always defer to the current label and your prescriber.