What is the most widely-used sedative-hypnotic drug?

Alcohol is considered the most widely-used sedative-hypnotic drug due to its broad social acceptance and prevalence in many cultures around the world. It acts as a central nervous system depressant, producing calming effects and euphoria, which contribute to its popularity in social settings and recreational use. Many people use alcohol to relax, alleviate anxiety, or cope with stress, leading to its widespread consumption compared to other sedative-hypnotics.

While benzodiazepines and barbiturates are also classified as sedative-hypnotics, their usage is typically more restricted and monitored due to potential dependence and overdose risks. Benzodiazepines, although common in clinical settings for treating anxiety and sleep disorders, do not match alcohol's level of casual and widespread use. Barbiturates, once more commonly prescribed, have largely fallen out of favor in favor of safer alternatives and are used much less frequently today.

Heroin, while a powerful and addictive substance, is not classified as a sedative-hypnotic and does not hold the same social acceptance as alcohol. Instead, it falls under the category of opioid drugs. Overall, the social context, prevalence of use, and classification of these substances all contribute to alcohol being recognized as the most