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According to my doctor, 4 hours. You can switch them up. Take acetaminophen, (Tylenol), then wait 4 hours and take Ibuprofen, wait another 4 hours and take acetaminophen and so on. :) 15 people found this useful.
Avoid NSAIDS such as ibuprofen, Aleve, or aspirin for 48 hours after surgery and take 2 extra strength Tylenol every 6 hours for pain. If your doctor gave you a narcotic pain killer, remember to take it with food and avoid taking Tylenol at the same time.