Marilyn Manson was the first "psychedelic" music I ever listened to
First heard "Smells Like Children" (was always my favorite) in middle school and it has such an obvious drug influence but that was lost on me. I knew it was self-consciously bizarre and scary but I didn't really understand why and that made it more interesting. "Antichrist Superstar" is maybe a better album but it's less fun and suffers from being overlong and somewhat pretentious.
Here's a few of my favorites: