OP, I'm assuming you are drinking out a lot? And probably crap craft beers?
It is a big chunk of change no matter how you slice it.
So in the last 6 months I have pretty successfully transitioned to a Vodka regime. I buy the inexpensive quad or triple filtered stuff for about 6-7bucks a bottle or I also like Barton's 75 proof Long Island Iced Tea mixed with a splash of sweet and sour and coke. So yeah, alcohol cost has gone to around $4 a week.
You should try it. Vodka requires only a splash of water or if you want to get fancy add some ice and a twist of lemon or olives. Cuts down significantly on the peeing as well. If you don't feel too much like drinking but your friends do, you can fake it with water and lemon.
If it is a bar spending habit it is simple enough to have one drink and stick with water the balance of the night.
Do what you like though.