Advanced Holistics 4 Way Virility Support System provides the herbs (tribulus terrestis, maca, muira puama and eryucoma longifolia) to directly support testosterone production. It also provides mucuna pruriens, which contains L-dopa (the neurotransmitter that is involved with the mental and emotional sides of sexual excitement.) To complete its Western component, it provides the amino acids, L-Arginine and L-Histidine, which increase blood flow to the penis.
