1. something that is to happen or has happened to a particular person or thing; lot or fortune. 2. the predetermined, usu. inevitable, course of events. 3. the power or agency that determines the course of events.
Alternating between ibuprofen and acetaminophen every 2 hours because you have to wait 4 hours for each of them to take a second dose of the same thing. So instead you take a dose of Acetaminophen now, then Ibuprofen in 2 hours and back to Acetaminophen 2 hours later as needed.
Aspirin and Ibuprofen : Talk to your doctor before using aspirin to make sure that is safe for you. FDA offers recipe for proper mixing of aspirin and ibuprofen : FDA offers recipe for proper mixing of aspirin and ibuprofen Wait 8 hours after taking 400 mg. of ibuprofen before taking aspirin.