Can I take my Wegovy a day late — and what should you do next?

The two decisions you are actually weighing up

When you realise you missed your injection day, there are only two questions that matter: how late is it, and how close is your next scheduled dose? Wegovy's weekly dosing window is designed with some flexibility because semaglutide stays active in the body for considerably longer than 24 hours. That built-in overlap is what makes a one-day slip less critical than it might feel in the moment.

If you remember on the day after your usual injection day and your next dose is still at least two full days away, the NHS patient information for semaglutide is clear: inject as soon as you remember and then return to your normal weekly day. You do not need to double up, and you do not need to wait until next week.

If you only remember when the next scheduled dose is less than two days away, the right call is to leave the missed dose entirely and carry on with your usual day as planned. Taking two doses too close together significantly raises the risk of gastrointestinal side effects, which is precisely what careful titration is designed to prevent.

It helps to know that feeling unsettled about this is completely normal. A missed injection can feel more significant than it probably is, especially early in treatment when you are still finding your routine. The common questions our team fields every week include this one, and the answer is almost always reassuring.

What changes when you have recently moved to a higher dose

If you have just stepped up (from 0.5 mg to 1 mg, or 1 mg to 1.7 mg) the missed-dose calculation is the same, but the stakes feel slightly different. At a new dose your body is still adjusting, and nausea or other gut symptoms can be more noticeable in the first week or two. Injecting a late dose at that stage is still the right thing to do if the timing allows it, but it is worth being a little more attentive to how you feel over the next day or so.

If you are on the 2.4 mg maintenance dose and have been stable for some weeks, a single day's delay is unlikely to be noticeable clinically. Semaglutide's mechanism involves sustained GLP-1 receptor activation, and blood levels do not fall steeply in the space of 24 hours. This is quite different from, say, a daily tablet where timing has more immediate consequences.

People who find themselves regularly late on injection day might find it worth reviewing whether a different time of day or day of week suits their routine better. Changing your injection day is possible, but it requires a gap of at least two days from your last dose to your new chosen day, a point best discussed with your prescriber so it is logged in your notes.

When a late dose tips into a longer delay

A day late is very different from three or more days late. If more time has passed since you missed your dose, the clinical picture shifts, some of semaglutide's appetite-suppressing effect may have reduced more noticeably, and you may want guidance on what to do when the delay has stretched beyond 48 hours. The prescribing guidance becomes more cautious at that point, and your prescriber may want to consider whether a temporary dose adjustment is sensible.

For patients who are also thinking about whether injecting slightly ahead of schedule is ever an option, the rules around that direction are explained on our page about taking Wegovy a day early. The answer is not a straightforward mirror image of the late-dose rule, so it is worth reading separately.

All missed-dose guidance in the Patient Information Leaflet assumes you are taking the dose as prescribed. If you are unsure which rule applies to your specific situation, or if your dose has changed recently, contacting your prescriber is always the safer move. The cost of Wegovy through a regulated private service includes access to prescriber support for exactly these questions, it is not a one-off transaction with no aftercare.

Practical steps to prevent future missed doses

Most people who miss an injection do so not from forgetfulness but because life interrupts a routine. A recurring calendar alert set for the same day each week, or pairing the injection with something fixed in your week, makes a real difference over months of treatment.

Storage is worth checking too. Wegovy pens are kept in the fridge and, once in use, have a limited time outside refrigeration per the SmPC. If travel or a disrupted week contributed to the missed dose, a conversation about safe pen storage while away is useful, our support team is available seven days a week for exactly that kind of practical query.

If you are still weighing up whether Wegovy is the right fit for your situation, our page on the BMI and eligibility criteria for Wegovy covers who it is licensed for in the UK. And if you are already on treatment with us, a prescriber from our team can review any timing question with you when you are ready. The free consultation is the starting point for anyone not yet on treatment.