I don't know about alcohol, but this drug has really helped me. I doubt I would be able to tell you I've been smoke free for over a year without it. I know a lot of peole get side effects from chantix but not much for me. I took it steadily for about 9 month and stopped about 5-6 weeks ago. I started having cravings again and broke down and paid for a re fill. That first pill worked fast and really helped with any cravings. I will take it as needed for however long and try to always have some on hand.
I used Chantix but I don't drink very much, especially when taking a drug. I'm almost certain that "do not drink when using this medication" is there on the label somewhere.