An herb I didn’t list for Parokin’s but it is also considered to help is Ashwagandha, it is described on the Nat Health thread.
Berberine is the active constituent in Barberry, and I don’t see it listed as being effective for Parkinson’s but I am far from all knowing.
Link to Parkinson’s info:
https://freerepublic.com/focus/bloggers/3735908/posts?page=1828#1828
I don’t have time at the moment to find entries on Ashwagandha but if you have some minutes you can look for it.
I’ve heard of Ashwagandha. It was listed as being compatible with the other ones you listed. We will check these out and share with my brother, who was diagnosed with it a year or so ago.