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.
The painkilling effects of ibuprofen start soon after the dose is taken. However, the anti-inflammatory effects take some time. It can take even 3 weeks to get you best results. The 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 isnât enough to make out any effects. After 12 half-lives (or 1 day), there is only 1/4096th remaining or almost none.