Maltooctaose is a low molecular weight carbohydrate obtained by starch hydrolysis. It is composed of a group of linear α(1-4)-linked D-glucose polymers and trace amounts of (1-6)-linked glucose condensed with a degree of polymerization of 8.

Glycyl-L-glutamic acid is a neurotrophic factor (NF) in vivo, and exerts function of maintenance of AChE content and activity. Glycyl-L-glutamic acid doesn’t act directly on AChE synthesis, and may prevent preganglionic neuronal degeneration.

Glycyrrhisoflavone is a tyrosinase inhibitor, it also shows inhibitory effects on monoamine oxidase.