Amalaki Rasayana derived from Indian gooseberry (Emblica officinalis) and Rasa-Sindoor, an organo-metallic ash in the form of nano-sized crystals of mercuric sulphide. Both are traditionally used as part of the rejuvenating Rasayana therapy, one of the eight major branches of Ayurveda. These formulations are believed to minimize old age ailments. In a study published in India Nature the author Dr. Vivek Tiwari showed that Amalaki Rasayana therapy suppressed key biological processes associated with Alzheimer’s disease and other degenerative brain disorders and improved memory and neuronal metabolic activity in mouse model of Alzheimer’s disease.

Tiwari, Vivek, et al. “Amalaki Rasayana improved memory and neuronal metabolic activity in AβPP-PS1 mouse model of Alzheimer’s disease.” Journal of Biosciences 42.3 (2017): 363-371.