San Huang Tablet is a kind of Chinese patent medicine tablet with bitter and slightly astringent taste. The main active ingredients are rhubarb, small split alkali hydrochloride, baicalin infusion, and the excipients are sodium benzoate, starch, sucrose, lemon yellow and so on. It is mainly used to clear heat and detoxify the toxins, relieve fire and relax the bowels. It is usually used clinically for sores on the mouth and nose, sore throat, red and swollen gums, bleeding ulcers, abscesses and boils, and constipation with yellow urine. Adults need to follow medical advice and avoid blind self-medication, avoid smoking, alcohol and spicy stimulating food during the medication period, and should not take other tonic Chinese medicines at the same time.