I'm always routing around the web for anything that might help fix PD. There are a few articles about elderflower that show promise.
realnatural.org/native-amer...
Extract
"The finding of four herbal medicines that induce Nrf2 among dopamine-producing brain cells is important.
At least three of these (garlic, red clover and elderberry) are available as commercial extracts"
ncbi.nlm.nih.gov/m/pubmed/2...
Elderflower tea tastes good too.