It is just a nootropic drug invented in 1996 by a crew Doing the job for Merck, Sharp and Dohme, that was the 1st compound formulated which functions as being a subtype-selective inverse agonist at the ?5 subtype in the benzodiazepine binding internet site about the GABAA receptor.4F-MPH is assumed to act largely to be a dopamine and norepinephrine