Lost Smile San has the efficacy of activating blood circulation to dispel blood stasis, dispersing knots and relieving pain, and is mainly used for treating stagnant blood and pain syndrome. It is recommended to consult a doctor before taking it. Lost Smile San is composed of Wu Ling Lip and Pu Huang, in which Wu Ling Lip can facilitate blood circulation, dispel blood stasis and relieve pain; Pu Huang can promote blood circulation and eliminate blood stasis, and also has the effect of stopping bleeding, the two are necessary for the use of blood circulation to dispel blood stasis, and disperse knots and relieve pain. Clinically, Lost Smile San is often used in the treatment of stabbing pain in the heart and abdomen caused by stagnation of blood stasis, post-partum dyspepsia, irregular menstruation and acute pain in the abdomen, etc. It is contraindicated in pregnant women and in women with weak spleen and stomach. Contraindicated for pregnant women, and used with caution for women with weak spleen and stomach and menstruating women. As the formula contains Wu Ling Lipid, it should not be used with Ginseng and preparations containing Ginseng. Patients who need it are advised to take the medicine under the guidance of a doctor.