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.
13-12-2010 05:43. Naltrexone has a half life of 6 hours, however it has a metabolite 6-beta-naltrexol with a half life of 13 hours-though i am unsure if 6-beta-naltrexol is an antagonist, i am pretty sure it is. (though admittedly i could be wrong) So you should be good tomorrow.