Naltrexone Treatment for Alcoholism

Inclusion Criteria: * Meets criteria for alcohol dependence. * Committed to alcohol abstinence as a treatment goal. * Individuals will be required to identify two family members or close friends who are knowledgeable about their location, drinking behavior, and psychosocial status. Exclusion Criteria: * Meets criteria for any other psychoactive substance use disorder (excluding nicotine and caffeine). * Meets criteria for a major psychiatric disorder and are in need of or currently undergoing pharmacotherapy. * Females who are pregnant, lactating, or not using a reliable method of contraception. * Currently experiencing a serious medical condition that would place them at risk or interfere with study participation. * Experiencing acute hepatitis or liver failure or whose liver function test is more than 3 times normal. * Have a history of severe allergies, multiple adverse drug reactions or known allergy to naltrexone. * Vocabulary below the 5th grade reading level. * Abnormal MRI scan. * HIV infection due to the neurological sequelae. * Significant central nervous system diseases. * Seizure disorder or history of closed head trauma. * Neuroendocrine disorders. * Treatment with opiates within the last six months.