Altern Med Rev. 2003 Aug;8(3):284-302 full text online
Hot flashes - a review of the literature on alternative and complementary treatment approaches.
Philp HA.

Hot flashes are a common experience for menopausal women, with an 85-percent incidence in the West. With the increased knowledge of side effects attributable to conventional treatment options, more women are exploring natural alternatives. Although more definitive research is necessary, several natural therapies show promise in treating hot flashes without the risks associated with conventional therapies. Soy and other phytoestrogens, black cohosh, evening primrose oil, vitamin E, the bioflavonoid hesperidin with vitamin C, ferulic acid, acupuncture treatment, and regular aerobic exercise have been shown effective in treating hot flashes in menopausal women.