“Maggee was in pain from both her knees and it was getting worse, she could not do the stairs anymore despite the Rimadyl we were giving her daily. My vet suggested switching to Deramaxx, although both drugs are pretty similar the Deramaxx apparently has some different enzmyes. The difference is night and day - Maggee is bouncing around, chasing squirrels and running up stairs like her arthritis has been eradicated.”