^ Ha ha well I imagine that's a fairly common side effect of using too much of anything.
What I'm trying to ask is, when was the last time you put a drug in your body? If you haven't in a while then you don't have to worry about it getting worse, but if you just used something then things could get bad, you dig hep cat?
Don't drink anymore vodka! That's a large amount of phenobarbital, how big is your tolerance? I would definitely recommend you seek medical help or at least have someone keep an eye on you brother.
^ I think it would be a very good idea to get help, call an ambulance or get a friend to drive you but it sounds like you have used way too many CNS depressants.