This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. (September 2014) (Learn how and when to remove this template message)
Tenuifolins are bio-active terpenoids. Tenuifolins inhibit beta-amyloid synthesis in vitro. Tenuifolins have nootropic activity in vivo via acetylcholinesterase inhibition and increased norepinephrine and dopamine production.