The autonomic nervous system is the part of the nervous system that controls muscles of internal organs (such as the heart, blood vessels, lungs, stomach, and intestines) and glands (such as salivary glands and sweat glands).
Naltrexone is also used to reduce cravings for alcohol. Scientists are unsure how it works in relation to alcohol but it has been shown to reduce desire and cravings by blocking the same receptors that create feelings of pleasure when opioids are taken.
Naltrexone, or naltrexone hydrochloride, is an opioid antagonist used to treat alcohol and opioid dependence. It is used primarily in the treatment of alcoholism to prevent cravings. In the treatment of opioid dependence naltrexone is used to block the euphoric effects of opioids drugs such as heroin, morphine, codeine and methadone. Both uses are considered to support abstinence in conjunction with other types of treatment.