Patients with Parkinson's disease experience a severe lack of dopamine - a neurotransmitter. This is due to the reduction in endogenous production of dopamine in the substantia nigra - the part of the brain that contains an abundance of dopaminergic (dopamine-producing) neurons. With this said, L-dopa (the precursor to dopamine) becomes the foundation of treatment which is why drugs like Sinemet (which contains L-dopa) and Pramipexole (which activates dopamine receptors) are prescribed.… Read More Natural Sources of L-Dopa & Carbidopa