 - Meets the following drinking criteria as measured by the Timeline Followback TLFB: drank within 30 days of randomization; reports a minimum of 48 standard alcoholic drinks avg. 12 drinkswk. in a consecutive 30-day period over the 90-day period prior to intake; and has 2 or more days of heavy drinking defined as over 5 drinks per day in males and over 4 drinks per day in females in this same pre-treatment period, prior to intake. 