Get the yellow pages out and call vets, rescues, whoever until you find one that will help you. I have done this myself in the past, and have gotten help when I needed it. There are kind people out there that will help you and this cat. Without knowing the exact reason for this cats condition, the medications you might try could do more harm than good, and some of them may be toxic to cats. Cats have a different metabolism and many drugs that are fine for people will KILL a cat. That is why everyone is telling you to FIND A WAY to get this cat to the vet, even if it means asking strangers for help. Somebody will help you if you are persistant, and the cat will get the care it needs. It's just going to take a little effort on your part. Maybe if you post your location people here can give you some contact numbers in your area of someone that can help you.
Megan
'The only thing necessary for the triumph of evil is for good men to do nothing.'
-Edmund Burke
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