My motor symptoms were quote mild (list to left in gym situations; slower left hand performance while typing or "finger-flapping." Non-motor symptoms included anxiety because my brother had recently died from PD complications; increased irritability; and a kind of melancholia which I ascribed to boredom in retirement. Not enough in themselves for Dx. However, after a DaT scan, my movement specialist determined it was incipient PD. Rasagiline alone was prescribed as a possible block to progression. It certainly has been successful at keeping any further motor symptoms at bay. The non-motor are more iffy; they often depend on whether I'm getting along with my daughter-in-law! Memory weaknesses worry me but being 81 may account for some lapses. So, in answer to your question, I must say I don't know my indebtedness to the pharmaceutical industry.