Rimadyl Dangers in Dogs

The Senior Dogs Project: "As soon as your dog begins Rimadyl therapy and during the entire time he takes it, watch for the following symptoms, all signs of potential life-threatening reactions to the drug:
loss of appetite
change in drinking habits (refusal to drink or increased water consumption)
unusual pattern of urination, blood in the urine, sweet-smelling urine, an overabundance of urine, urine accidents in the house
vomiting
diarrhea
black, tarry stools or flecks of blood in the vomit
lethargy, drowsiness, hyperactivity, restlessness, aggressiveness
staggering, stumbling, weakness or partial paralysis, full paralysis, seizures, dizziness, loss of balance
jaundice (yellowing of the skin, mucus membranes and whites of the eyes)
In the presence of any of these symptoms, IMMEDIATELY STOP the drug and take your dog to the vet. The earlier you catch the problem, the better the chances of complete recovery."

--personally, I wouldn't eve risk it.
E.S.