Alcohol, weed, poppers, ... etc. All those different substances produce feelings of pleasure and happiness. Do they share a hypernym in English?
"Intoxicant" covers all of your examples. It has a root in "toxic", poisonous. Intoxicant is commonly used in legal parlance.
"Drug" is commonly used for all of your examples except alcohol, although alcohol is also a drug and alcohol can be used as a medicine.
"Addictive substances" also fits, although that's two words.
Cheers for recognising that alcohol can also cause a high. That use has become less frequent since the 1960s. The Kingston Trio's song, "Scotch and Soda" has the lyric, "Baby, do I feel high, oh me, oh my" for both the alcohol-induced high and the emotionally-based high.