There is no such thing as not being able to take Colla Corii Asini during menstruation. For women with insufficient qi and blood (deficiency of qi and blood) during menstruation, which is manifested as low menstrual flow, shortness of breath, fatigue, and yellowish color (yellowish color without luster), they can take Colla Corii Asini appropriately under the guidance of a doctor in order to replenish qi and blood. Colla Corii Asini has the effect of tonifying blood (nourishing blood), nourishing yin (nourishing yin liquid), moistening lung (nourishing lung), stopping bleeding (stopping bleeding), etc. It is mainly used for treating all kinds of blood deficiency certificates, bleeding certificates and other diseases, and this product is often melted and blended to be served; fried Colla Corii Asini can be used in soup or pills and loose. Nourishing yin and tonifying blood (nourishing the blood in the body) more raw, stopping bleeding Pu huang fried. This product is sticky and greasy, hindering digestion, and is prohibited for those with weak spleen and stomach. If the symptoms associated with menstrual bleeding medical, under the guidance of a doctor to use as prescribed, do not abuse without authorization, so as not to cause adverse consequences.