Gingko (which has been used in Chinese medicine for MANY years) is another one of my favorites!
The leaves on the Gingko have been used to improve cerebral circulation, boost mental alertness & enhance overall brain function.
As a nootropic, it has been shown to be effective in memory loss, slow thinking, & reasoning.
References: https://pubmed.ncbi.nlm.nih.gov/8741021/
https://pubmed.ncbi.nlm.nih.gov/21061003/
https://pubmed.ncbi.nlm.nih.gov/12404671/
https://www.clevelandclinicmeded.com/medicalpubs/pharmacy/sepoct02/ginkgo.htm
https://pubmed.ncbi.nlm.nih.gov/12369732/
https://pubmed.ncbi.nlm.nih.gov/14602503/
