Men and women have used anaphrodisiacs--herbs that suppress the libido--for centuries. In antiquity, priests, nuns and soldiers would take anaphrodisiacs to curb sexual desire during times of temptation. Today, some people take libido-suppressing herbs before an exam, date, job interview or presentation, hoping to prevent distracting thoughts or physical signs of arousal. Herbs that suppress the libido have been the subject of very limited clinical study, and none has been scientifically proven to decrease sexual desire. Consult your health care provider before taking any medicinal herb.