Caryl, I'm uncomfortable talking about Leo's dose of this medication on a public board due to the fact that I would prefer no one think it is the correct dose for their cat. He is an acrocat, and a very large cat, so his dose would probably be totally incorrect for another cat. I believe your vet should be able to locate dosing information for this medication on the VIN perhaps, and if s/he can't find it, send me a PM and I would be more than glad to give you my vet's phone number for him/her to consult with. I'm sorry, that's the best I can think to do for you with this, as I'm not sure if we'd get the site in trouble discussing dosing of a narcotic pain reliever.