The efficacy of Four Substances Cream is to nourish blood and regulate menstruation (regulating menstrual irregularities caused by blood deficiency). There is no best time to take it, and it is recommended to follow the doctor’s advice. Four Substances Cream is mainly composed of Angelica sinensis, Radix Paeoniae Alba, Radix Rehmanniae Praeparata and Rhizoma Ligustici Chuanxiong. It is often used to treat symptoms such as fatigue and weakness caused by blood deficiency, pale face, pale lips, irregular menstruation and scanty menstruation. The adverse effects of Four Substances Cream have not been clarified. Pregnant women and diabetics should not take this medicine. Four Substances Cream belongs to tonic drugs, during the period of taking the medicine, it is not recommended to eat spicy stimulation, cold, greasy food. It is not suitable for people with menstrual clots accompanied by abdominal pain and refusal to be pressed or distension and pain in the chest and ribs (chest and ribs area). It is forbidden for those who are allergic to this product, and people with allergies should use it with caution. The use of drugs need to be under the guidance of a physician, if you do not feel well, it is recommended to go to the hospital in time.