Colla Corii Asini is the main raw material for the production of food, Colla Corii Asini has the blood nourishing Yin, moistening dryness, stopping the efficacy of bleeding, eating Colla Corii Asini on menstrual leave on the blood atrophy and so on has a certain effect of alleviation, but the Colla Corii Asini cake to play a limited role in the efficacy of medication can not be a substitute for drug therapy. Colla Corii Asini is a traditional Chinese medicine, which is a solid gelatin made from the skin of donkey, a family of equine animals. Colla Corii Asini has the effect of tonifying blood and nourishing yin, moistening dryness and stopping bleeding, and is used for treating blood deficiency and atrophy, dizziness and palpitations (rapid heartbeat, often accompanied by panic), heartburn and insomnia, coughing and dryness of the lungs, coughing and hemoptysis with exertion, vomiting and urination of blood, and blood in stools and discharging of blood (menstrual bleeding in excessive amounts or more than a few drops) and other diseases. It should be noted that people with loose stools (thin and unformed feces) should be cautious of using Colla Corii Asini. During menstruation, it is possible to take Colla Corii Asini, but it is recommended to consult a medical professional before taking it.