No Timestamp Provided
The query doesn't include a specific time when Advil (ibuprofen) was taken, so it's impossible to calculate how long ago that was.
When Does Advil Wear Off?
Advil's effects typically last 4-6 hours for pain relief or fever reduction, based on standard 200-400 mg doses in adults.[1] Full clearance from the body takes longer—ibuprofen's half-life is about 2-4 hours, meaning it's mostly eliminated (94-97% gone) after 5 half-lives, or 10-20 hours.[2]
What If You Need to Know for Safety Reasons?
- Next dose timing: Wait at least 6-8 hours between doses to avoid exceeding 1,200 mg daily without doctor advice.[1]
- Interactions or overdose concern: If it's been under 4 hours with high doses, contact poison control (1-800-222-1222 in US) or a doctor—symptoms like stomach pain or dizziness can appear.[3]
- Drug test detection: Ibuprofen shows up in urine for 1-4 days after last use, depending on dose and metabolism.[4]
Provide the exact time it was taken for a precise calculation.
[1]: Drugs.com - Advil Dosage
[2]: PubMed - Ibuprofen Pharmacokinetics
[3]: FDA - Ibuprofen Label
[4]: Healthline - How Long NSAIDs Stay in System