OK I guess I should have asked:<br>What would you use acetemophin, ibuprofin and aspirin for? I leave them in my 1st aid kit...more for headaches during class or if I am stuck somewhere and driving home, the last thing I need is to be distracted. If I have no known allergies, are the 3 aforementioned drugs all in the same, is one better than the other, or should I carry all 3 for different purposes? I don't mind giving up space, and really they don't take up much. I just leave two pairs of each pills in a plastic container that is half the size of a film can.