Quick answer: what to do about a missed GLP-1 dose depends on the drug. Take a missed Ozempic injection within 5 days. Take Mounjaro or Zepbound within 4 days. Take Trulicity if at least 3 days remain before the next dose, and Wegovy if the next dose is more than 2 days away. Otherwise skip it and stay on your usual day.[1][2][4][5][6] For daily drugs like Saxenda, Rybelsus and the Wegovy pill, skip the missed dose and take the next one as usual.[3][7]
Never double up to catch up. The rules below come from each drug’s prescribing information. For more basics, see our GLP-1 basics hub.
Missed dose rules by drug
| Drug | If you miss a dose | When to skip instead |
|---|---|---|
| Ozempic (semaglutide injection) | Take it as soon as possible within 5 days | More than 5 days late: skip, take next dose on usual day[1] |
| Wegovy injection (semaglutide) | Take it if your next dose is more than 2 days away | Next dose less than 2 days away: skip[2] |
| Mounjaro (tirzepatide) | Take it within 4 days (96 hours) | More than 4 days late: skip[4] |
| Zepbound (tirzepatide) | Take it within 4 days (96 hours) | More than 4 days late: skip[5] |
| Trulicity (dulaglutide) | Take it if at least 3 days (72 hours) remain before the next dose | Next dose in 1-2 days: skip[6] |
| Saxenda (liraglutide, daily) | Skip it; take the next daily dose as usual | Always skip; no extra dose[7] |
| Wegovy pill (daily) | Skip it; take the next tablet the following day | Always skip[2] |
| Rybelsus / Ozempic tablets (daily) | Skip it; take the next tablet the following day | Always skip[3] |
After a late weekly dose, all the labels say to go back to your regular weekly schedule.[1][4][6] The Mounjaro and Zepbound patient information adds one more rule: don’t take two doses within 3 days (72 hours) of each other.[4][5]
Each drug’s own page has more detail: semaglutide, tirzepatide, dulaglutide and liraglutide.
Worked examples
Each of these assumes a usual injection day of Sunday.
- Ozempic, remembered on Wednesday. Three days have passed, which is within the 5-day window. Inject on Wednesday, then take the next dose the following Sunday as usual. Wednesday to Sunday is 4 days, which also meets the label’s minimum 2-day gap.[1]
- Ozempic, remembered on Saturday. Six days have passed, more than 5. Skip the missed dose and inject on Sunday as normal.[1]
- Zepbound, remembered on Thursday. Four days (96 hours) is the cutoff. If you’re still within 96 hours of your usual Sunday time, inject now. If you’re past it, skip and inject on Sunday. Either way, don’t take two doses within 3 days of each other.[5]
- Wegovy injection, remembered on Friday. Your next dose is Sunday, less than 2 days away, so skip it. Remembered on Wednesday instead? Sunday is more than 2 days away, so inject now and return to Sunday.[2]
- Trulicity, remembered on Wednesday. Sunday is 4 days away, at least 3 days, so take it now. Remembered on Friday? Only 2 days remain, so skip it.[6]
If the timing is borderline, your pharmacist can help you count the hours.
Tips to avoid missing doses
- Use a phone alarm that repeats weekly, labeled with the drug name.
- Keep a written log with the date, dose and injection site. This also helps if you can’t remember whether you’ve already injected.
- Pick a stable day. If your schedule keeps changing, move your injection day once, following the minimum-gap rules below, rather than taking it late every week.
- Plan refills early. Running out is a common cause of missed doses. Order your next box or pen before you open the last one.
- For daily tablets, keep the bottle by your bed with a small glass for water, since the dose has to come first thing in the morning.
What if you miss more than one dose?
Missing several doses lets the drug wash out, and restarting at your full dose can bring back strong nausea and vomiting. Two labels give specific restart rules:
- Wegovy: if 2 or more weekly doses in a row are missed, restart the dose escalation at a lower dose to reduce stomach side effects.[2] The label doesn’t name the exact dose, so your prescriber decides.
- Saxenda: if more than 3 days have passed since the last dose, restart at 0.6 mg daily and step up again.[7]
The other labels don’t give a formal restart schedule after several missed doses. Call your prescriber before restarting after two or more missed weeks, especially if you were on a high dose. The semaglutide dosage chart shows the step-up schedules prescribers usually return to.
Skipping a week on purpose
People sometimes skip a dose for travel, illness or an upcoming procedure.
- Half-lives differ. Semaglutide’s half-life is about 1 week, so one skipped dose leaves a fair amount in your body.[1] Tirzepatide and dulaglutide each have a half-life of about 5 days.[4][6]
- Before surgery, don’t skip on your own. Tell your surgical team you take a GLP-1. The labels say there isn’t enough data to show that stopping beforehand reduces the anesthesia risk linked to delayed stomach emptying.[2]
- If you’re sick with vomiting or diarrhea, call your prescriber. Dehydration while on these drugs has been linked to kidney injury.[2]
For trips, our traveling with GLP-1 medications guide covers keeping your pen cold and staying on schedule.
Changing your injection day
If you need a new regular day rather than a one-time catch-up, the labels set a minimum gap between doses:
| Drug | Minimum gap when changing your day |
|---|---|
| Ozempic | At least 2 days (more than 48 hours)[1] |
| Mounjaro, Zepbound | At least 3 days (72 hours)[4][5] |
| Trulicity | Last dose at least 3 days before the new day[6] |
Our guide to the best time to take a GLP-1 has more on choosing a day and time.
Can you take a half dose instead?
People sometimes ask whether to take half a dose after missing one, or take half because of side effects. The products aren’t designed for it.
- Single-dose pens (Wegovy, Mounjaro and Zepbound single-dose pens, and Trulicity) inject the whole dose at once. There’s no way to give half.[2][4][6]
- Multi-dose pens are built around set doses. Ozempic dials only to its listed doses, and the Mounjaro and Zepbound KwikPens each hold 4 doses of one strength.[4][5] The Ozempic instructions say not to set a dose by counting clicks.[1]
- Saxenda dials only to its listed doses: 0.6, 1.2, 1.8, 2.4 or 3 mg.[7]
- Tablets must be swallowed whole: don’t split, crush or chew them.[2][3]
If a dose is too strong, the right fix is a lower prescribed dose, not an improvised half dose. Some clinicians discuss off-label smaller doses. Our microdosing GLP-1 guide explains what evidence exists. To compare doses across drugs, see the GLP-1 dose conversion chart.
