How long does Advil (ibuprofen) start working, and how long does it last?
Advil (ibuprofen) usually starts reducing pain or fever within about 30 to 60 minutes after you take a dose. For many people, the pain/fever relief lasts around 4 to 6 hours, which is why it’s often taken every 6 to 8 hours depending on the product directions and your age.
What affects how long Advil works for you?
The duration of effect can vary based on:
- The dose and whether you took the tablet quickly as directed or took it with food.
- What you’re treating (headache, muscle/joint pain, menstrual cramps, fever).
- Your individual metabolism and other medications.
- Whether the symptoms are from something that keeps triggering pain (for example, inflammation that continues even after the first dose).
What should you do if it wears off too soon?
If pain returns before the next dose time, follow the dosing instructions on the package or your clinician’s guidance. Avoid taking extra doses closer together than directed. If you need Advil more frequently for more than a few days, or if fever or significant pain persists, it’s a sign to get medical advice.
When to get urgent help instead of taking more Advil
Seek urgent care if you have signs of an allergic reaction (trouble breathing, swelling of face/lips), severe stomach pain, black/tarry stools or vomiting blood, chest pain, or symptoms of overdose (for example, extreme drowsiness, persistent vomiting, or confusion).