you CAN alternate between tylenol and
ibuprofen for a bad
fever. staggar the doses according to how long they last.
for example, if the medicines last 4 hours each, take tylenol at 4pm, ibuprofen at 6pm, then tylenol again at 8. you MUST watch the dosages on the label and how often to take them, I CANNOT STRESS THIS ENOUGH!. ALSO, you cannot take more than 3000mg of tylenol (also called acetaminophen) in one 24hr period. it's toxic to your liver.