Mucuna puriens powder contains a natural source of L-Dopa from the seed of the Mucuna pruriens plant. Dopamine functions to trigger many nerve impulses that affect muscle movement. Dopamine is also largely responsible for regulating physical movement and emotions, and also affects the pleasure and motivation centers of the brain. Dopamine also aids in neural transmission between neurons in the brain. Thus, the less dopamine there is, the less communication there is between cells in the substantia nigra (midbrain). This area of the brain plays an important role in reward, addiction, and movement.