Took Your Wegovy Late or Missed a Dose? Here's What to Do

Step 1, Work out exactly how late the dose is

The first thing to do is check the gap. Wegovy (semaglutide) is injected once a week, and its half-life means it lingers in your system long enough to give you a workable window. The NHS patient information for semaglutide confirms the rule is anchored to 5 days, or 120 hours, from the time the dose was originally due. Pull up your calendar or your phone and count forward from your usual injection day, not from when you last injected.

A lot of people tie their injection to something fixed, like Sunday evening after dinner or Monday morning before leaving the house. If you don't have a routine peg like that, it's worth creating one once this situation is resolved. Consistency in timing is one of the simplest ways to avoid the late-dose question altogether. You can read more about how the weekly dose schedule works on our Wegovy dose guidance page.

Once you know the gap in hours, the rest is straightforward.

Step 2, Under 5 days late: inject now, then reset your schedule

If fewer than 120 hours have elapsed since the dose was due, inject as soon as you remember. You don't need to wait for your original day to come back around. After that single catch-up injection, simply move your next scheduled dose to seven days later. Your weekly cycle restarts from the day you actually injected, not from the day you originally planned to.

This is the scenario most people are in when they ask about a late dose. Life gets in the way: a busy week, a long weekend away, that Monday morning where the 12pm cut-off came and went before you'd even thought about it. The window is generous enough to accommodate most slips without requiring any change to your overall plan.

What you should not do is take the delayed dose and then take the next scheduled one only a day or two later to 'catch up'. Doubling up increases the likelihood of nausea, vomiting and other gastrointestinal side effects without any additional weight-management benefit. The Wegovy dosing schedule overview explains how each weekly dose builds on the last.

Step 3, 5 days or more: skip it and stay on your original day

Once 120 hours have passed, the missed dose is gone. You skip it entirely and inject your next dose on the day it would originally have been due, maintaining your normal weekly schedule. It can feel counterintuitive to let a dose pass unused, especially given the cost of treatment, but injecting two doses within a few days of each other is not advised. Your prescriber and the Patient Information Leaflet are clear on this.

Skipping a dose does not reset your titration stage. If you were on 0.5mg before the missed dose, you return to 0.5mg on your next injection day. If you were mid-titration and miss several doses in a row over a number of weeks, that's a different clinical picture, and you should contact your prescriber before restarting rather than simply continuing where you left off.

Understanding how each Wegovy pen is set up and calibrated can also help you feel more confident about the mechanics of injecting on an adjusted day. And if you ever want to understand how the click-count system maps to your specific dose, including how to calculate your Wegovy dose by clicks at the 2.4 mg maintenance stage, the dose-by-clicks guide is a practical reference.

What if late doses keep happening?

An occasional late dose is a normal part of life on a weekly injectable medicine. Repeated delays are a different matter. If you find yourself regularly losing track of your injection day, or if work or travel patterns make a fixed weekly day genuinely unworkable, speak to a prescriber about moving your dose day to a more sustainable point in the week. Changing day is straightforward, provided the gap between the last injection and the new day is at least four days, as the Wegovy information page notes.

Persistent missed doses during the titration phase can mean your body spends longer adjusting to each level without getting the full clinical benefit of the schedule. It can also complicate decisions about whether to proceed to the next dose stage. That conversation belongs with a prescriber who can see your full history. The NHS patient information for semaglutide and the guidance on the NHS semaglutide medicines page both address this, and the MHRA Yellow Card scheme is there if you ever want to report an unexpected reaction after a late or doubled injection.

If you're managing a question about your dose or schedule and want a clinical answer specific to your situation, speaking to a prescriber is always the right move. Our free consultation puts you in front of a GPhC-registered prescriber who can review your case the same day. For anything urgent, contact us directly through the support page.