Missing a single dose of Wegovy is not dangerous, and the fix is straightforward: if your next scheduled dose is more than 48 hours away, take the missed dose as soon as you remember. If your next dose is less than 48 hours away, skip it entirely and pick up on your regular day. The key rule is to never double up to make up for a missed injection.
The 48-Hour Rule
Wegovy is a once-weekly injection, and the official guidance from the FDA label uses a simple cutoff to decide what to do. Count how many hours remain until your next scheduled dose.
- More than 48 hours until your next dose: Take the missed dose now.
- Less than 48 hours until your next dose: Skip the missed dose and inject on your regular day as planned.
This rule exists because semaglutide, the active ingredient in Wegovy, stays in your body for about a week. Injecting two doses too close together raises the concentration in your system and amplifies side effects, particularly nausea, vomiting, and stomach pain. Because the drug slows digestion, too much of it exaggerates that effect and can leave you feeling miserable for days, since the medication doesn’t clear quickly.
What If You’ve Missed Two Weeks or More
A single missed dose is easy to manage. A longer gap is more complicated. If 14 or more days have passed since your last injection, you should talk with your prescriber before resuming. After several weeks without the drug, your body loses the tolerance it built up during the slow dose-escalation phase. Jumping back in at your previous maintenance dose can trigger significant gastrointestinal side effects: nausea, vomiting, diarrhea, and stomach pain, all more intense than what you experienced when you first started.
Your prescriber may have you restart at a lower dose and re-escalate, essentially repeating part of the ramp-up schedule. This is the same principle behind why Wegovy starts at 0.25 mg and increases gradually over months. Your gut needs time to adjust.
How You Might Feel After a Missed Dose
Within a few days of a missed dose, many people notice a return of appetite. The appetite-suppressing effects of semaglutide fade as drug levels drop, so you may feel hungrier than you have in weeks or find yourself thinking about food more often. This is temporary and resolves once you take your next injection.
Some people also notice mild fluctuations in energy or cravings, particularly for higher-calorie foods. None of this means the medication has stopped working. It simply means levels have dipped below the threshold where you feel the full effect. One missed dose won’t undo your progress.
Changing Your Injection Day
If a missed dose throws off your schedule, you can permanently switch to a new day of the week. The only requirement is that at least two days (48 hours) have passed since your last injection. So if you normally inject on Mondays but took a late dose on Wednesday, you could shift your regular day to Friday or Saturday going forward. Pick whatever day works best and stay consistent from there.
Why You Should Never Double Up
It can be tempting to take two doses in the same week to “catch up,” but this is the one thing you should avoid. A double dose intensifies every effect of the drug. The most immediate risk is severe nausea, vomiting, and stomach discomfort that can persist for several days because semaglutide clears slowly. For people who also take diabetes medications, a double dose raises the risk of low blood sugar, which can cause confusion, dizziness, or fainting. One missed dose has minimal consequences. A double dose can make you genuinely sick.
Pen Storage If Your Dose Is Delayed
If you’re delaying a dose because you’re traveling or away from your refrigerator, the pen itself will be fine for a while. Wegovy pens can stay at room temperature for up to 28 days, as long as the temperature stays between 46°F and 86°F and the pen is kept away from direct light. After 28 days outside the fridge, the pen should be discarded even if medication remains inside. So a delayed dose of a few days poses no storage concerns as long as you’re not leaving the pen in a hot car or in direct sunlight.