One of the industry's leading formulas, Source Naturals Hot Flash may help minimize the body's often dramatic response to declining levels of estrogen. Hot Flash includes optimal amounts of phytoestrogens, such as the isoflavone genistein, which can bind to estrogen receptors and create a weak estrogen-like effect in the body. Hot Flash also supplies black cohosh, which may lessen the effects of luteinizing hormone and reduce the frequency of hot flashes.