Purely my opinion, of course, but I suspect drug companies want profits, and the other stuff is secondary.
There are recognised drugs which help with drinking. I took Campral/acamprosate for a few weeks when I first quit. The idea is it reduces cravings in those who have stopped drinking. It seems to be effective but willpower is required too. I’d decided to quit anyway so came off Campral after a few weeks. I doubt it had any benefits in that short time.
I’m pretty sure there’s no medication out there which can help. Antabuse is the famous one, but that sounds absolutely horrendous and dangerous. It’s definitely worth seeing a GP, but there are more effective ways to quit than any current medication.