My Comet was on Rimadyl for 1 year and a half with no problems.  She was around 11 years old when she went on it but she had been hopping on 3 legs all of her life.  She didn't have cancer.  

I'm a firm believer that if they need it to feel better, give it if there are no side effects.   

I consider long-term use of an NSAID to be daily for more than a month at a time.  Many dogs take these drugs without problems but you have to monitor the bloodwork to know if there might be organ dysfunction.  I have also treated many dogs that have elevated enzymes on 1 drug but not another.  I like meloxicam the best because it seems least likely to cause stomach or liver problems but the tablets can only be used in larger dogs and the liquid can be pricey.

Pam

neysha said:

Thanks everybody..will ask the vet. Benji is losing protein in his Urine and I am afraid that Rimadly and Chemo together may ruin him.Gonna try Accupuncture to help reduce the pain in his joints.

ETGayle is a big supporter of accupuncture.  By the time I located an accupuncturist locally, Trouble only had one treatment before we were forced to make quality of life decisions.  I had high hopes it would make a big difference for us. Overall, I think there are several folks here who use accupuncture regularly with great success.