Inclusion Criteria:

• Healthy volunteers who are 21-40 years of age
• If female, 7-20 alcoholic drinks must be consumed weekly.
• If male, 10-25 alcoholic drinks must be consumed weekly.
• If female, must be non-lactating, not pregnant, and using a reliable contraception method (i.e. abstinence, intrauterine device [IUD], hormonal birth control, or double barrier method [male condom, female condom, or diaphragm plus a spermicidal agent such as contraceptive foam, jelly or cream]).
• Must have a body mass index (BMI) ≥18 and ≤30.
• Able and willing to provide an informed consent.
• Able to understand and follow the instructions of the investigator, including the delayed discounting tasks.
• Have a breath alcohol concentration of less than 0.02 on visits 1, 2, 3, 5, and 6; and 0.00 on visits 4, 4a, 7 and 7a.

Exclusion Criteria:

• Positive urine drug screen
• Using Cocaine, stimulants (other than nicotine and caffeine), methamphetamine, and/or amphetamines greater than 30 times in the last 24 months
• Using inhalants, hallucinogens, ecstasy, and/or ketamine greater than 30 times in the last 24 months
• Current enrollment in an alcohol, or other drug treatment program or current legal problems relating to alcohol, or other drug use, including awaiting trial or supervision by a parole or probation officer
• Binge drinking more than three times per week (>5 standard drinks in one session is a binge)
• Currently trying to quit alcohol use
• Current dependence on any other psychoactive drug (except nicotine or caffeine) and/or alcohol as determined by the study physician’s assessment .
• Clinically significant medical or psychiatric illness as determined by screening blood tests, medical history, and physical exam performed by the study physician