"i am highly alllergic to internal intake of nsaids.  the gel has been tried as an alternative.  i have had bilateral knee replacements and suffer from rsd.  i thought the gel was helping the knees.  however, when i was off of my narcotic protocol for
a period of two weeks, i discovered that voltaren did not work.  i was sad that it did not work because i am seeking a good alternative to narcotics."