Memory Pro is a comprehensive memory support formula; now with lutein/zeaxanthin and soy-free.  It supports cognitive health and memory, and promotes cerebral vascular blood flow and acetylcholine levels. Acetylcholine levels the chief neurotransmitter of the parasympathetic nervous system, the part of the autonomic nervous system that contracts smooth muscles, dilates blood vessels, increases bodily secretions, and slows heart rate.