The drug isn't used any more, 100% gone and no reason to bother restoring it as you can do the same things with corruption/affection.
The cheats have changed from v1.632, not sure the OP for Teacher's Pets has been updated to reflect the new codes (under "Cheats" in my Signature). "Cruise the Streets" only unlocks the "Shady Corner", otherwise it's 100% empty. "Shady Corner" is what you want, there's 2 random encounters; one's got the only decent content in the game and the other has the token black drug dealer.