Licorice root is the basis for the Deprenyl drug( from Hungary where it grows)…Parkinson’s is excess Phosphorus in the Spleen & Globus Palladus…Often caused by early trauma, decades later the Spleen degenerates to the extent that it affects the brain-unless there was head trauma, then it is more direct…It is the Copper in Licorice root that dissolves the excess Phosphorus which is like a slow eating mold…All Coppers will help…Licorice root tincture & tea daily is a very good start…