What happens if you miss a dose of Alpelisib?
Last updated September 7, 2026.
**If you miss a dose of alpelisib, take it with food within 9 hours of your usual time; if more than 9 hours have passed, skip it.** Take your next dose at your usual time the next day, and never double your dose to catch up. If you vomit after taking alpelisib, do not take another dose that day. These instructions cover a forgotten dose; if your prescriber paused treatment because of side effects, ask before restarting. A daily reminder linked to a regular meal can help you stay on schedule.
What to do
- **Check the time:** Count the hours since you were supposed to take your dose.
- **Take with food:** Take the missed dose only if you are within 9 hours of your usual time.
- **Skip a late dose:** After more than 9 hours, skip the dose and resume at your usual time the next day.
- **Avoid extra doses:** Never double up or take a replacement dose after vomiting.
- **Set a reminder:** Use a daily alarm timed to a regular meal.
- **Contact your prescribing team:** Ask for guidance if you miss several doses or side effects interfere with treatment.
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