Mucuna is a legume widely used in traditional Ayurvedic herbalism. Mucuna is known to naturally possess the direct dopamine precursor, L-dopa.* Dopamine is a neurotransmitter that helps to maintain normal brain and nervous system function and promotes a positive mood.* Unlike dopamine, L-dopa can penetrate the blood-brain barrier and can be used by the brain to produce dopamine.* This product is standardized to a minimum of 15% L-dopa.