"i have used this for 30 yrs off and on. i first started using for my migraines back when i was 30 years old. then i realized it worked good for menstrual cramps. then as i got older i used it for my osteoarthritis. now that i am 60 years old. it helps me for everything! my arthritis, my knee, my fibromyalgia. i have used other non steroid anti- inflammatory medications but they just do not seem to work as good as ketoprophen! i can count to the minute  how long it takes for it to work! this is a life saver medication for me!"