Ketamine is probably what you’re thinking of. Not as bad, it’s pretty addictive (but so is adderal, go figure). From what I’m aware, if you want concentration you would need pretty small doses of ketamine as it’s mostly a downer. The other thing though is that you can’t do ketamine habitually for a long time because it really fucks up your bladder.
Democratic socialists also have had a small but established coalition in the house and Senate for decades too.