Ethanol, entering the bloodstream and reaching the brain, turns on the dopamine and GABA systems, so to speak, the former causes dopamine - the "pleasure hormone", which causes euphoria, and the second, GABA, which is an inhibitory neurotransmitter in the brain, which causes sedation , muscle relaxation.
We owe a surge of good mood during the first stage of alcoholic intoxication to ethanol, a chemical compound that is popularly called simply alcohol.
Ethanol is a powerful depressant, that is, its main effect on the human body is oppression nervous system.
Ethanol almost instantly enters the bloodstream, begins to accumulate in the brain and almost immediately triggers the neurotransmitters responsible for the inhibition of the central nervous system. We can quickly observe a sedative effect - for example, complete or partial relaxation of muscles (up to the inability to control your body), or confused speech.
At the same time, alcohol provokes the release of endorphins, hormones of happiness.
So drunken euphoria is when the hormones of happiness "lie down" on the depressed nervous system. That is, a person not only experiences strong positive emotions, at this moment he is also pleasantly physically and intellectually relaxed.
The duration and depth of such euphoria is purely individual, is associated with the quality and strength of a particular drink, as well as with genetic predisposition of the drinker.
Alcohol, like any other drug, causes an artificial surge of endorphins (the hormone of happiness). Smoking also affects the production of happiness hormones (short-term effect).