Here I found some studies on Sida Cordifolia (growing one atm and I bumped into it), the studies seem to be conficting each other in my basic understanding since this isn't my native language and I'm no doctor, so I definitely suggest doing more research if you want to be sure the plants are actually usable for any particular disease case!
1) here they found Sida useful:
https://www.ncbi.nlm.nih.gov/pubmed/239943022) here not so much I guess. but there are other plants researched:
http://gyrus.hiim.hr/images/gyrus25/gyrus25_Part9.pdfquote:
A British paper from 2014 discusses the effects of five Ayurvedic herbs in a well established Drosophila melanogaster (fruit fly) model of Parkinson disease. The herbs used were:
Mucuna pruriens (also known as Zandopa), Withania somnifera, Sida cordifolia, Centella asiatica and Bacopa monnieri. The group used different combinations of herbs, individual herbs, drug levodopa as positive control and no treatment as negative control. The flies were challenged with a climbing test, i.e. the percentage of flies crossing a designated distance (16.5 cm) within first 10 seconds were counted. The results showed that Bacopa mannieri significantly improved the climbing ability of Parkinson disease fly model, whereas surprisingly the same effect wasn’t noticed with Mucuna pruriens. This interesting finding implies the following: Mucuna pruriens, which has successfully been used in humans doesn’t have the same effect in fruit fly PD model, the PD ameliorating effect of Bacopa mannieri might not turn beneficial for humans considering previous statement vice-versa, fruit fly disease models might be used for drug screening, but some substances could unfortunately be discarded (even though they finally do show therapeutic effect in humans as Mucuna pruriens demonstrates).
interesting stuff - but again they killed more mice and flies and only gave me a bunch of confusing material so yay science
! but maybe you find it useful so I thought to share - cheers!