The Chinese patent medicines that can be taken for blood cold include Ai Fu Warming the Uterus Pill and Warming the Menstruation Pellet. 1. Ai Fu Warm Uterus Pill is composed of Cornus Officinalis, Ai Ye, Fragrant Fungus, etc. It has the effect of better regulating qi and tonifying blood, warming the uterus and regulating menstruation. This medicine is used for menstrual irregularities and dysmenorrhea caused by blood deficiency and qi stagnation, lower focal coldness, and is characterized by postmenstrual disorders, low menstrual flow, blood clots, pain in abdomen, cold pain and heat in abdomen, and soreness and pain in the lower back and knees. Avoid eating cold food during taking this product, and should not take cold bath. It should not be taken by patients with cold and fever. For the treatment of dysmenorrhea, it is advisable to start taking the medicine 3 to 5 days before menstruation for 1 week. For the treatment of irregular menstruation, if the symptoms are not relieved after taking the medicine for 1 month, the patient should go to the hospital for consultation. 2. Warm Menstrual Granules is composed of Codonopsis, Astragalus and Poria. It has the efficacy of benefiting qi and strengthening spleen (regulating the qi of spleen and stomach), warming menstruation and dispersing cold (warming the meridians of human body and dispelling the cold in the body), and is mainly used for dysmenorrhea caused by cold and dampness stagnation, which is characterized by cold pain in the abdomen, pain that decreases when there is heat, dark color of menstruation, and excessive menstrual discharge. Avoid eating cold food and taking cold bath while taking this product. It should not be taken when one has a cold. Those who suffer from other diseases should take it under the guidance of a physician. For the treatment of dysmenorrhea, it is advisable to start taking the medicine 3-5 days before menstruation for 1 week, and if there is a request for a childbearing, it should be taken under the guidance of a physician. If dysmenorrhea is not alleviated after taking the medicine, or if the dysmenorrhea is severe, the person should go to the hospital for consultation and treatment. If there is any discomfort, it is recommended to go to the hospital in time, do not blindly self-medication.