Natural products (NPs) have played an important role in medication development, particularly in the treatment of cancer and infectious disorders, but also in other therapeutic areas such as neurodegenerative disease. In comparison to traditional synthetic compounds, NPs have unique properties that provide both benefits and problems to the drug discovery process. The scaffold variety and structural complexity of NPs are immense. Many beneficial medicinal herbs can be used to treat dementia and Alzheimer's disease. Flavonoids and alkaloids, for example, have been demonstrated to have powerful anti-effects. Alzheimer's As a result, more research into medicinal plants and the discovery of new active chemicals to combat Alzheimer's disease is required.