Lost Smile San is composed of 6g of Wu Ling Lipid and 6g of fried Pu Huang. Lost Smile San has the effect of activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), dispersing knots and relieving pain. In the formula, Wuling Lipid is bitter, salty, sweet and warm in nature, with the effect of facilitating blood circulation, dispersing blood stasis and relieving pain, while Fried Pu Huang is sweet and flat in nature, with the effect of activating blood circulation and removing blood stasis, and can be used for stopping bleeding when it is fried, the combination of the two together can bring about the efficacy of activating blood circulation and removing blood stasis and dispersing blood stasis and relieving pain. Lost Smile San can be used for the treatment of blood stasis and pain, mainly manifested as stabbing pain in the heart and abdomen, post-partum dyspepsia, menstrual irregularities, and acute pain in the abdomen (lower abdomen). The adverse effects of Lost Smile San have not been clarified, for the ingredients of this formula allergy is prohibited, pregnant women are prohibited, weak spleen and stomach and women menstruation should be used with caution, patients with the above symptoms are recommended to use the drug under the guidance of a physician, do not use it without authorization, so as not to cause adverse reactions.