Kudzu Effects on Brain Ethanol Levels: Proton Spectroscopy Assessment

Inclusion Criteria: * Capable of understanding and complying with the protocol * Good physical and mental health (normal physical exam, ECG, blood and urine chemistries, no psychopathologies) * Body Mass Index between 18-30, inclusive * Age 21-40 years * Moderate alcohol drinkers (less than 20 drinks/week) * Have a stable living situation with current postal address * No contraindications to MR scanning (see MR scanning exclusion criteria below) Exclusion Criteria: * Concurrent diagnosis of Axis I disorder * Current or past alcohol dependence; may meet criteria for alcohol abuse. Other drug dependence acceptable only if greater than 3 years. * Current drug abuse (other than alcohol or marijuana abuse). Past drug abuse is acceptable. * Subjects cannot be actively seeking treatment for any drug or alcohol dependence. * Subjects cannot use marijuana more than once a week. Marijuana abuse/dependence are acceptable if the use criteria is met. * Maintained on an antipsychotic or antidepressant medication; taking prescription medications except certain short-term anti fungal agents and some tropical creams for dermal conditions. * Tobacco use greater than 10 cigarettes per day * History of major head trauma resulting in cognitive impairment or history of seizure disorder * Heavy caffeine use (greater than 500 mg on a regular, daily basis) * For female volunteers, a positive pregnancy test