GABA (Progressive Labs)

GABA is an amino acid neurotransmitter in the central nervous system. 

5-HTP (NOW)

5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simplicifolia)

MinTran (Standard Process)

Neuroplex (Standard Process) 

Nurotrophin PMG (Standard Process)

Orchex (Standard Process)