Maximum daily dose for APAP is not to exceed 4 grams, which is 4,000 mg. So if you take tylenol or other meds that contain 325 mg of tylenol, no more than 12 per day. If 500 mg, no more than 8 per day. If 750 mg, no more that 5 per day. And so on.
Not 100% on this one, but I believe maximum daily dose on Ibuprofen is 2,400 mg (Ibuprfen does not agree with me at all, so not totally certain on this).
Hope that helps