Dingkun Dan generally has no side effects when taken normally, but it must be taken for women who have tonifying and nourishing qi and blood, moving qi and activating blood, if they have abundant qi and blood, regular menstrual cycle and high menstrual volume, it is not recommended to take it, it will cause delayed menstrual cycle, increased menstrual volume, or even nosebleed and dizziness when tonifying too much. In Dingkun Dan, Shu Di Huang, Deer antler, Du Zhong, Chuan Niu Knee, Aconite and Cinnamon are used to nourish kidney energy and blood, and the combination of Safflower, Chuan Xiong, Xiang Shen Shen and Wu Ling Li can promote the flow of Qi and activate blood, which together can nourish Qi without stagnation and replenish blood without stagnation, so it is especially suitable for women with low menstrual flow, dysmenorrhea, postmenstrual weakness and lack of Qi and blood, without other side effects. Therefore, patients who really need to take this medicine can take it with confidence.