Drug Usage – The person gains superpowers via drugs. Drug Usage is also known as Drug Augmentation, Drug Empowerment and Drug Enhancement.
Bane (DC) uses the drug Venom to gain superhuman strength in Batman V1 #497.
Hourman (DC) take the drug Miraclo to gain superpowers for an hour in DC Who’s Who V1 #10.
There have been attempts to deal with drugs realistically in comic books.
Harry Osborn (Marvel) struggles with drug addiction in Marvel Fact Files #29(Eaglemoss).
Speedy (DC) is shown as a drug addict in Green Lantern V2 #85.