[2] Some various drug groups that are approved by the US Food and Drug Administration are racetam, cholinergics, acetylcholinesterase inhibitors, AMPAkines, smart drugs, dopaminergics, nootropic vitamins, and neurohormones.
Pramiracetam, which belongs to the racetam group, is a nootropic food supplement that can supposedly increase cognitive function and enhance learning and memory, as well as protect neurons in cases of traumatic brain injury.