Craving for alcohol will be measured with the Alcohol Urge Questionnaire (AUQ) and the Obsessive Compulsive Drinking Scale (OCDS) before each fMRI scanning session and the Alcohol Craving Questionnaire before and after each fMRI scanning session. Nicotine consumption will be assessed with the Fagerstrom Test for nicotine dependence both at screening and on the day prior to each dosing day.