I asked my new gastro if I could take aspirin. (I'd heard one who has Crohn's shouldn't take it.) He said it was OK, then paused and asked if I was taking it for my heart. I said no, only for headaches or other occaisional pain.
He then so no, don't take it, use Tylenol.
I've always preferred aspirin. I don't think acetemetiphan is as effective.