my kitten was taken in last week for neuter and first boosters. he started acting kind of funny and lethargic the last few days. took him to the vet today and he was given fluids and a drug called buprenex. i gave it to him not knowing that it would do what it did but guess its a pain med. 10 hours later, he is still 'out of it' and not able to walk very well. his eyes are rolled back in his head and it is worrying me. the vet said he had a virus. any words of advice?? thank you. just anyone who has give thier cat this drug and the side effects would be super helpful for me...