Study To Examine Effect Of CP-866,087 On Consumption And Craving Of Alcohol In Alcohol Dependent Subjects.

Randomized, Placebo-Controlled Parallel Group Study Comparing Effect Of Three Doses Of CP-866,087 And Naltrexone On Acute Alcohol Consumption And Craving After Seven Days Of Treatment In Alcohol Dependent (DSM IV) Subjects Who Are Not Currently Seeking Treatment

Test the hypothesis that increasing doses of CP-866,087 will decrease the total number of drinks consumed during a 2 hour acute alcohol consumption assessment and to determine the safety and tolerability of multiple doses of CP-866,087 in alcohol dependent subjects compared to placebo.

Inclusion Criteria:

• Subject meets the DSM-IV criterion for current alcohol dependence.
• Subject is currently not engaged in, and does not want, treatment for alcohol related problems.

Exclusion Criteria:

• Subject meets criteria for current DSM-IV diagnosis for any other psychoactive substance abuse or dependence disorder, excluding nicotine and caffeine.
• Specialized inpatient or outpatient alcoholism or other addiction treatment (except nicotine) within the past 12 months.