"i have had both knees arthroscopic in the last year and half. i ended up reinjurying one knee and when this happened the other knee begins to swell and hurt because it is compensating for the injury knee. i found out i have pesanserine bursitis, which is very painful especially going up stairs. i was beginning to shuffle from one room to another. i had two zipsor left from a sample pack i got from the doctor. i try to hang on to them in case my pain got worse. since my doctors office had not received any samples i ask if they could call in a prescription. i didn&#039;t care about the cost. zipsor has helped the pain and swelling tremendously in my knees. since i have arthritis in my knees i know this will be my go to as needed pain reliever."