It is not recommended to take Cordyceps sinensis during menstruation. Cordyceps has the effect of tonifying the kidney and lungs, stopping bleeding and resolving phlegm. The use of Cordyceps during menstruation may shorten the amount and duration of menstruation. Cordyceps is a complex of the fungus Cordyceps sinensis mycelium of the genus Cordyceps in the family Ergotaceae and its hosts, such as the larval body (mycelium) of the insect bat moths of the family Bat Moth, and other larval bodies (mycelium). It has the effect of tonifying the kidney and benefiting the lung, stopping bleeding and resolving phlegm. The main treatment for kidney yang deficiency caused by lumbar and knee weakness and cold, impotence and spermatorrhea, prolonged cough, asthma, labor phlegm and blood. As Cordyceps has the effect of stopping bleeding, it is not recommended to take this medicine during menstruation, so as not to affect the normal blood volume of menstruation and lead to shorter menstrual cycle, causing discomfort. The adverse reactions and contraindications of Cordyceps sinensis are not clear, but it should be noted that, in addition to not being recommended to take Cordyceps during menstruation, it is not suitable for those who have superficial evils (evils on the surface of the muscle). Drugs need to be taken under the guidance of a professional doctor’s diagnosis, do not take drugs on your own.