I found this pill in my medicine cabinet and I have no clue what it is.. I'd like to know before I throw it away. It's a average size round pill, with '81' imprinted on it, it's yellow, and on the other side is blank, with a smooth surface. I looked at the other pills on the list, and the closest it comes to is the 81 mg aspirin, but the 81 on that pill looks printed and not embedded on in it like the one I have.. if anyone has any idea, please let me know. Thanks.