Oxytocin
It has been shown that oxytocin differentially affects males and females. Females who are administered oxytocin are overall faster in responding to socially relevant stimuli than males who received oxytocin. Additionally, after the administration of oxytocin, females show increased amygdala activity in response to threatening scenes; however, males do not show increased amygdala activation. This phenomenon can be explained by looking at the role of gonadal hormones, specifically estrogen, which modulate the enhanced threat processing seen in females. Estrogen has been shown to stimulate the release of oxytocin from the hypothalamus and promote receptor binding in the amygdala.
Inositol nicotinate
Inositol nicotinate, also called inositol hexanicotinate, is marketed in the United States as a "no-flush niacin" dietary supplement. Flushing, in physiology, essentially means that epidermal tissues have become reddened, such as when the skin is irritated from the histamine responses related to an allergic reaction, or from recent physical exercise, or even from anger or embarrassment. This form of niacin is supposed to reduce or prevent flushing by being broken down into the metabolites niacin (nicotinic acid) and inositol at a slow rate.