"absolutely useless! i was prescribed this after having knee surgery (miniscus) @ 1 every 6 hours, 50mg. after the anaesthesia wore off and i ad already taken my first dose of this is was in a lot of pain. i stuck to the prescription anyway. i didn&#039;t sleep at all and was up until 4pm the next day when i finally took 600mg of ibuprofen which did 10 times more than this garbage. i have given up on this &quot;pain reliever&quot; and an sticking to ibuprofen. if i could rate this drug other than the scale given i would rate it a -10."