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.
for some it can even take less than 15 minutes to work since ibuprofen has a Â½ life of two hours it works its best within this period hence an individual should feel better by 30 minutes to an hour note never take ibuprofen than what has been prescribed to you because you do not know how much your body absorbshe half life of ibuprofen is about 2 hours meaning that after two hours only Â½ of the active dose will be present in the system after 3 half lives or 6 hours there is 1 8th remaining which isn t enough to make out any effects after 12 half lives or 1 day there is only 1 4096th remaining or almost none