I have a 50lb Australian Shepherd who is a little over 14 yrs old. Though she has naturally slowed down somewhat, her physical health is still pretty good. She had a back spasm or something some months ago, and...in consultation with our vet...we put her on Rimadyl, though we are aware that it can cause liver problems. The back problem healed up quickly, but we kept her on Rimadyl at a dosage of 50 mg per day. When we took her in for a blood test about a month ago, her urine was good, and blood was okay, but a couple things were elevated. Some actual numbers were:
PHOS was 3.7 mg.dl, and top of normal is 6.8
CREA was 1.9 mg/dl, and top of normal is 1.8
BUN was 27 mg/dl, and top of normal is 27
ALKP was 218 u/l, and top of normal is 212
LIPA was 1873 u/l, and top of normal is 1800
AMYL was 1480 u/l, and top of normal is 1500
We took her off Rimadyl since she was really only initially on that for the back spasm.
She definitely has a little cognitive dysfunction as of fairly recently, and we can manage that, but we wonder if part of her uneasiness nowadays could be related to arthritis that isn't showing up as limping, or anything obvious. She does often growl menacingly when we lift her, and she rarely used to do that. We take that as a sign of some physical discomfort.
So we are thinking of putting her back on the Rimadyl. Someone mentioned two other drugs to us...Previcox and Meloxicam; do they pose less of a threat to the liver than Rimadyl, or are they all about the same?
Also, given the blood test numbers above, and the age of our dog, and the dosage, feel free to suggest either going back on the Rimadyl, or...since our dog doesn't show obvious signs of pain...staying off the Rimadyl. I know that will forever be a point of controversy and speculation, but I would appreciate any insight!