With any drug you have to watch for side effects. I used to feel the same way about Rimadyl, but have since used it and had no problems. Dogs just need to be monitored closely...and certainly should be properly screened and evaluated prior to taking Rimadyl. There are other meds ... I don't know anything about Sadie...I keep seeing people talk about pups so I guess she is carrying pups now? That will be another thing that needs to be considered. Anyway....here is an informative link:
http://www.srdogs.com/Pages/rimadyl.html