Question: what are brain enhancing drugs?
Answer: Caffeine. Caffeine is the most widely consumed psychoactive substance in the world ( 1 ). ...  L-Theanine. L-theanine is a naturally occurring amino acid found in tea, but it can also be taken as a supplement ( 7 ). ...  Creatine. ...  Bacopa Monnieri. ...  Rhodiola Rosea. ...  Panax Ginseng. ...  Ginkgo Biloba. ...  Nicotine.