Monster is not quite oxy (https://www.themoviedb.org/tv/110695-dopesick) but it's sorta on the side of selling a drug people get addicted to? I used to drink a lot of redbull and had to stop. There's no age limit at 711 to buy them but it's the one thing I won't let my kids get.

Different people will probably have different experiences. I for one limit my Monster consumption to one can a day, and if that stuff was all that addictive, I don't suppose I'd be able to voluntarily hold myself to that benchmark.