Prevention of alcoholism may be attempted by regulating and limiting the sale of alcohol, taxing alcohol to increase its cost, and providing inexpensive treatment.[17] Treatment may take several steps.[7] Due to medical problems that can occur during withdrawal, alcohol detoxification should be carefully controlled.[7] One common method involves the use of benzodiazepine medications, such as diazepam.[7] These can be either given while admitted to a health care institution or occasionally while a person remains in the community with close supervision.[7] Mental illness or other addictions may complicate treatment.[18] After detoxification, support such as group therapy or support groups are used to help keep a person from returning to drinking.[6][19] One commonly used form of support is the group Alcoholics Anonymous.[20] The medications acamprosate, disulfiram or naltrexone may also be used to help prevent further drinking.[8]