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.
How long do I have to wait to take Ibuprofen after I take Excedrin Migraine? I took one Excedrin migraine this morning for a sinus headache and it did not do the trick. The usual dose is two though, but I am sensitive to caffeine so I only took one. (250 MG Acetamiophen, 250 MG NSAID Aspirin), How many hours should I wait until I take 400MG of ibuprofen, my usual dose for sinus headaches? I would appreciate any help or advice you have to offer.