Can be used by men too. YAM is a natural precursor to the balancing sex hormone progesterone. Choline shows promise as a way to control mood swings and reduce memory loss. Increases in acetylcholine in the brain elevate mood, improve alertness, and mental energy. Low levels of acetylcholine are correlated with depression and lack of ability to concentrate.
Histidine is a precursor of histamine.
Studies show it can increase ease and intensity of orgasm in females when taken before sex. Also works wonders for older males who have difficulty reaching orgasm.