Noopept Stack 90 Premium Capsules Noopept is the name of manufacturers for N-Phenylacetyl L Prolylglycine Ethyl Ester. This chemical stimulates the production of NGF (nerve growth factor) and BDNF (brain-derived neurotrophic factor) in the hippocampus.N-Phenylacetyl L Prolylglycine Ethyl Ester also activates AMPA and NMDA ...