Question: how long do you have to wait to take another ibuprofen 800 mg?
Answer: A healthy adult can take ibuprofen every 4 to 6 hours. The maximum amount of ibuprofen for adults is 800 milligrams per dose or 3200 mg per day (4 maximum doses of 800 mg every 6 hours). However, use only the smallest amount of ibuprofen (Advil) needed to get relief from your pain, swelling, or fever.