A method of treating neurotransmitter dysfunction in a patient by optimizing catecholamine levels by administration of L-3,4-dihydroxyphenylalanine (L-Dopa or Dopa) precurors in combination with a source of L-Dopa. The dopa precursor is preferably administered in such quantities such that the amount of dopa from the dopa precursors does not fluctuate and affect outcomes in the synthesis of dopamine from dopa administration. The dopa precursor source is preferably tyrosine, but may alternatively be phenylalanine, N-acetyl-tyrosine, any active isomer thereof, or any other dopa precursor. The source of L-Dopa may include any natural or synthetic source, including, but not limited to, Mucuna pruriens.