Choline is highly recommended on these boards. There's theoreticals it's beneficial and countless testimonies as well. This is undeniable.
However, I believe there is a population that responds poorly to these. I am one of these people. Even relatively low doses of lecithin can cause me high levels of anxiety and depression. Huperzine A makes me dysfunctional for the day because of the intense anxiety and depression with suicidal ideation going as far to how to plan it out. If I knew everyday would be as bad as a day after taking huperzine a I very well might carry it out.
Disclaimer: I am not suicidal and do not have plans to carry out harm to myself or others.
Here's an excellent thread from this very subforum from 2005:
http://www.longecity...ium-hypothesis/
I'm going to try to look up some literature review and studies later since I should be trying to sleep right now.