The best time to take Colla Corii Asini depends on the specific situation. If the postpartum dew is small and there is no inflammation and fire, you can start taking it about 1 week after delivery; if the dew is incessant and red in color, you need to treat the dew first and then take Colla Corii Asini, usually about 3 weeks after delivery. Colla Corii Asini is a traditional herbal medicine to nourish blood and stop bleeding, nourish Yin and moisten dryness. Taking it in appropriate amount after delivery can promote hematopoietic function, prevent osteoporosis, and effectively relieve the symptoms of postpartum weakness and sweating. However, it is best to consume it after the dew is completely discharged, as it may lead to increased bleeding, which is not conducive to the recovery of the condition. Although Colla Corii Asini is useful, it is forbidden to consume too much at one time, usually 3-15g per day to avoid indigestion. Do not think that Colla Corii Asini is a good blood tonic. It is recommended that women with less postpartum malignant dew should nourish their body by stewing chicken, fish and meat with Colla Corii Asini about 1 week after delivery.