these exist. ghb, methqualone, barbiturates, and benzodiazepines all have a similar mechanism of action, cross-tolerance, and similar withdrawal syndromes, but

these exist. ghb, methqualone, barbiturates, and benzodiazepines all have a similar mechanism of action, cross-tolerance, and similar withdrawal syndromes, but fewer side-effects than alcohol. alcohol withdrawal is often treated with benzodiazepines. they are all heavily controlled, and benzodiazepines are considered some of the most damaging and addictive substances of abuse.