Gypsum powder is not toxic. The main component of gypsum powder is calcium sulfate, which is chemically stable, unreadable to the human body, non-irritating and non-corrosive. However, if it is frequently contacted, it will cause some symptoms, such as rough skin and allergies. It is best not to contact these things for a long time. When painting walls, choose some environmentally friendly gypsum powder and try to avoid poisoning. Gypsum is a monoclinic mineral whose main chemical composition is calcium sulfate (CaSO4). Gypsum is a widely used industrial and construction material. It can be used as cement retarder, gypsum building products, modeling, medical food additives, sulfuric acid production, paper filler, paint filler and so on. Pharmacological effects1.Natural gypsum decoction (1:1) has antipyretic effect when injected into artificially febrile animals.2.Significantly enhances phagocytosis of rabbit alveolar macrophages in in vitro culture test.3.Excites the heart of toad and rabbit heart in small doses and inhibits it in large doses.4.Gypsum decoction reduces the content of HBVDNA.5.Calcined gypsum is used externally. The medicinal effect can soothe the tendons and clear away heat, remove vexation and quench thirst, and clear away heat and toxins. Indications:It is used to treat heatiness, upset, delirium, thirst, dry throat, lung heat, dyspnea, sunstroke, spontaneous sweating, stomach fire, headache and so on.