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Round White Pill with 3 on one side, and M or W

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  • Round White Pill with 3 on one side, and M or W

    I had a bottle of Tylenol #3's in my medicine cabinet. Had some friends over for a small party. I went to take a Tylenol 3 a couple of days later to realize that they were replaced with a round flat white pill with 3 on opne side, and M or W in a box with rounded corners on the other side. Please help me identify these pills, so that I may try to figure out who switched my pills.


  • #2
    The replacement pill might be generic Tylenol #3 made by Mallinckrodt.

    Round white tablet debossed "3" on one side and an "M" in a box on the reverse side is 30 mg codeine and 300 mg acetaminophen.

    You can find an image for comparison at

    More info:

    I'm not a pharmacist or a medical doctor. This message is not medical advice nor is it an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.