The research on huperzine, an ache inhibitor, is mixed.
Some studies show it is protective against cell damage & apoptosis (zangara, 2003; bai, 2000) & may improve memory
(sun, 1999) while slowing dementia
(wang, 2005; zhang, 2006, 2008). Other studies show limited or mixed efficacy (rafii, 2011; li, 2008). Since it has few side effects, it may be worth a try, but talk to doc first.