Here's Why Superman Can't Get Drunk & High Our Editorial Policy. Superman is generally known to be invincible, so it's hard to apply human criteria to him regarding biological needs and effects. We know that Superman looks like a regular human, but his internal mechanism is drastically different.
A 2008 issue of the team-up series Superman/Batman showed that Superman even gets high in a super way. That is, with kryptonite. He gets high off of Magic K (Kryptonite), and sits on the couch and eats a whole bunch of food and does things you would expect a stoner to do if they had superman's powers.
Given that Superman does lose his powers on a semi-regular basis, it's actually very possible that Clark Kent could get drunk every now and then. Due to his weak alcohol tolerance, however, Superman likely stays away from bars as a rule. Kryptonite, when enchanted with certain magical energies, can have an effect on Superman that makes him high ly unstable.
What substance kills Superman? Green kryptonite weakens Superman and other Kryptonians, and can and will kill them with long-term exposure. Kryptonians under green kryptonite's effects experience severe muscular weakness, usually to the point of collapse, and excruciating pain, with both conditions progressively intensifying. Yes, he can if herbs/drugs/drinks are: magic-based, from Krypton, laced with Kryptonite or when Clark depowered.
Can Superman get high on weed? He can't get drunk because of his healing factor, but THC is a very different thing. I'm curious. I don't know about Superman, but the Flash can't get high or drunk without the help of some real loud shit.
Speedsters can't drink booze fast enough to get drunk, and probably can't smoke fast enough to get high either. Their metabolism is just too fast. But they have gotten lit off of scientifically concocted beverages made just for speedsters.
Superman on a red sun planet can get. Is Superman able to get drunk? A lot of characters in comics, like Captain America or Wolverine, are shown not being able to get drunk, but what happens when a Kryptonian starts to drink? Has he.