<unk>  (brand name: Nootropil®, Myocalm®) is a nootropic. It is a cerebral function regulating drug which, it is claimed, is able to enhance cognition and memory, slow down brain aging, increase blood flow and oxygen to the brain, aid stroke recovery, and improve Alzheimer's, Down's Syndrome, dementia, and dyslexia, among others.<unk> 's chemical name is  2-oxo-1-pyrrolidine acetamide; it shares the same 2-oxo-pyrrolidone base structure with 2-oxo-pyrrolidine carboxylic acid (pyroglutamate).<unk>  is a cyclic derivative of GABA. It is one of the racetams. Though largely ignored in the United States,<unk>  is commonly prescribed in Europe for a variety of conditions. However, in some places, due to its non-toxic nature and its general health benefits it is seen more as a food supplement than as a drug. One of its general health effects is said to be toning of damaged nerves and muscles (although this is scientifically unverified). It is safe for use by itself as a non-prescription drug in a reasonably healthy person.
Piracetam
Oxiracetam
Levetiracetam 
Brivaracetam
Mesuximide
Ethosuximide
Lamotrigine
Methsuximide