This review article investigates the literature attempting to establish any basic evidence-based principles behind Traditional Chinese Medicine (TCM) for the treatment of senile dementia. Five main ingredients include: Poria cocos, Radix polygalae, Radix glycyrrhizae, Radix angelica sinensis, and Radix rehmanniae. There appears to be evidence that these might have memory-improving effects. Multiple mechanisms of action are suggested, and eleven active principles are proposed.
Lin, Z. Gu, J. [and] Xiu, J. [et al] (2011). Traditional chinese medicine for senile dementia. Evidence-Based Complementary and Alternative Medicine: eCAM, July 25th 2011, 692621. Epub. 13 pages. (Click here to view the PubMed abstract).