varsity_prep_xo answered Monday August 6 2007, 3:37 pm: they stay in your system as an advil or something would, they numb the pain four like 3-6 hours. you only feel like sleepy on them, like you don't get high or anything lol... i had to ake them after i had surgery so thats how i know. [ varsity_prep_xo's advice column | Ask varsity_prep_xo A Question ]
ASAPcamille answered Monday August 6 2007, 3:02 pm: They stay in your system until the strength goes down, which could take a few hours.
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