First I want to say I am not a vet so this is in no way medical advice. I am a canine guardian and as such I do extensive research on new products, diseases or anything that I haven't heard about having to do with dogs. Rimadyl is one such item that I have done alot of reasearch on and feel the need to pass on the info I have found.

These are only a few of the articles found.

http://www.srdogs.com/Pages/rimadylfr.html
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http://www.k9obedience.co.uk/doghealth/treatment/rimadylandmetacam.html
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http://www.marvistavet.com/html/body_rimadyl.html

I recommend researching any new medication or product extensively before considering giving it to your dog.