place a rice sized drop on a piece of cheese...feed cat...hth
but then again an uncomfortably high cat is better than no cat.
.
1. Northrivernugz is right, a grain of rice is the normal dosage for a human and even then it can be too much so giving a cat the same amount is just idiotic.
2. I would rather have a dead cat thats in peace rather than a fucked up cat that has no clue whats going on and wants to die because its freaking out so much.
Smoke with your cat in the room and see if s/he will come up to you. If she does blow some smoke over its head and see what s/he does. If she likes it s/he will sniff at the smoke and you can go from there trying maybe 5% the size of a grain of rice. If your cat either hides or puts its nose into something to cover it from the smoke then don't try anything more because they dont like it. I know a friend who has a cat that loves the smell and will go straight to whoever is holding.
Side note: I had a dog that died last year, she had cancer of some type that was slowly spreading and was 12 years old. About 7months later i came home and she was sitting on the floor with blood everywhere from internal bleeding. The vet wasnt able to see her for 6hours so i sat with her for the entire time at home waiting for her to pass on or make it to the vet, was one of the harder things ive had to deal with. I guess what i am trying to say is that if she's too far gone and only has a little while left it may be better for you to have her put down rather than be in stress and pain. I know i regret not having my dog put down when i knew deep down she should of.