"occupational health at my workplace prescribed this patch for me because i apparently strained a muscle below my patellar bone... it did nothing for me! apparently it works for everyone else, so i may just be an oddball. it was like taking a placebo and i am not even taking other pain meds... so it&#039;s not like i have a tolerance level for pain meds... this just doesn&#039;t do anything for me. it was def. a miss. "