What do the FDA labels say about a missed weekly GLP-1 dose?

The Ozempic, Wegovy, Mounjaro and Zepbound labels all describe taking a missed weekly dose if the next scheduled dose is more than about 48 hours away, and otherwise skipping it and resuming the normal schedule. Never double up. Follow your own label and prescriber over any summary.

Why is there a 48-hour rule?

Because these medications have half-lives measured in days, doses taken close together stack on each other and raise peak concentration, which is what drives gastrointestinal side effects. The gap protects the spacing, not the total.

What if I missed several weeks?

Labels for semaglutide and tirzepatide address restarting after an extended gap, sometimes at a lower dose, because tolerance built during titration fades as levels fall. This is a prescriber decision, not something to work out from a chart.

Guide

Missed a GLP-1 dose: what the labels actually say

By Melvin Morina · Updated 2026-07-27

For the weekly injectables, the labels describe a roughly 48-hour boundary. If your next scheduled dose is more than about two days away, the missed dose is taken as soon as it is remembered. If it is closer than that, the missed dose is skipped and the normal schedule resumes. Doses are never doubled up. Your own label and prescriber override any summary, including this one.

Why 48 hours

Semaglutide's half-life is about a week and tirzepatide's about five days, so a dose taken too soon after the previous one does not replace it, it stacks on top of it. Peak concentration climbs, and peak concentration is what drives nausea and the rest of the gastrointestinal side effects. The gap exists to protect the spacing between peaks.

The same logic explains why daily medications work differently. Liraglutide clears in about 13 hours, so a skipped day is a genuine trough rather than a small dip, and the label tells you to simply resume the next day rather than compensate.

After a long gap

Missing several weeks is a different situation. Levels fall far enough that the tolerance built during titration fades, and the labels for both semaglutide and tirzepatide discuss restarting, sometimes at a reduced dose. That is a prescriber decision. A half-life chart can tell you how much is left; it cannot tell you what to do about it.

Sources

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Educational information only. Bo is a tracking app, not a medical device, and nothing here is medical advice, a dosing recommendation, or a substitute for your prescriber. Half-lives are population averages from the sources cited on each row; individual clearance varies with body weight, kidney and liver function, and other medication.