Well, it depends on how you define results. Even if it completely stops the aggregation, than you are still not cured. You lost neurons already. So in order to be normal again, these lost neurons should be regained in some way. The results you should see is or the progression of your PD completely stopped, or the progression slowed down.

Besides that, how do you know the dose you need to get benefit ? Maybe you need a bigger dose than the one you are taking now ?