I would be curious to see if we can get any PWP who have used Rehmannia to give us some anecdotal reports. With most supplements we discuss here that have "reported or rumored" effectiveness with PD, they are supposedly neuroprotective (typically antioxidants). However, with this supplement, it supposedly works on a very observable symptom, LID. It should be relatively easy to take the pills and see if they reduce dyskinesia. If anyone on this forum has used Rehmannia, please post your observations.

Gary