Noopept, the brand name for N-Phenylacetyl-L-prolylglycine ethyl ester, is a drug promoted as a nootropic.

While 1996 seems recent for pharmacological drugs, it often takes decades if not longer for a newly synthesized drug to enter the human market. This means that most drugs will have their effects inferred via animal testing. 

Studies conducted on rats have suggested that Noopept works as an antioxidant in the brain. Antioxidants are important for cellular regulation as excessive levels of "oxidants", elements which oxidize nearby molecules, will reduce efficacy of the metabolic pathways by blockage. By extension of this, the antioxidants can reduce blockages and increase metabolic rates improving overall cognitive function in regards to neural cells.

As of 2017 the exact pathways Noopept use are unknown in humans. However, the drug has been deemed safe for human consumption and is being evaluated for neuroprotective properties in stroke patients.
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