Conclusions: Rapamycin inhibits the activation of mTOR pathway, which contributes to protect against the loss of dopaminergic neurons and provide behavioral improvements in mice with Parkinson's disease. These results are partially related to the ability of rapamycin in inducing autophagy and reducing oxidative stress.
Is there a natural alternative to rapamycin?
In particular, they identified allantoin and ginsenoside as strong mimetics of metformin, epigallocatechin gallate and isoliquiritigenin as strong mimetics of rapamycin, and withaferin A as a strong mimetic of both.
Withaferin A is in Ashwagandha, and I have some arriving today!