Four Substances Capsule is used for oral administration. Four Substances Capsule belongs to Chinese patent medicine, which is composed of Angelica sinensis, Rhizoma Ligustici Chuanxiong, Radix Paeoniae Alba and Radix Rehmanniae Praeparata, with the effect of regulating menstruation and nourishing blood, it can be used for the treatment of weak camp and blood, irregular menstruation and other conditions. Four Substances Capsule is used for oral administration, and the adverse reactions of this product are not clear at present. Attention to allergy to this product is prohibited, allergic people need to be careful to take, pregnant women, lactating women, children, the elderly and other special groups is not clear whether to apply, should be taken under the guidance of a physician. Avoid cold food and drink, and should not be taken at the same time with cold medicine. If you need to use this product, you should go under the guidance of a physician to identify the evidence, do not blindly use your own medicine, so as not to cause adverse reactions.