Quote from mokwit:
Huperzine A (an extract from chinese Club Moss) is being looked at as a treatment for Alzheimers and has been shown to have short term memory boosting action. If I remember correctly it blocks Acetylchline breakdown in the synaptic cleft thus increasing the amount available and so acting like a cholinergic agonist such as Nicotine. Spanish Sage has also been shown to imrove memory and anecdotally both are an alternative to Viagra due to cholinergic receptors playing a part in the blod flow control mechanism.
Have yet to try Huperzine - Nicotine gave me the ability to focus which i lost when I gave up smoking years ago.
Interesting comment on nicotine. Many years ago, I was at a lecture where researchers from Yale were discussing the benefits of nicotine on the brain, and were looking at an oral form of nicotine for these reasons. Guess you can use the nicotine patch....from time to time.?