镁是人体必需元素之一。镁参与生命活动的所有重要方面，是细胞新陈代谢中各种酶系统的重要活化剂。硫酸镁为泻药和利胆药，近年来发现其具有治疗肺炎、肺心病、冠心病、高血压、胃十二指肠溃疡、急性腹泻、急性肾炎、偏头痛、破伤风和婴儿手足搐搦症等新用途。常用２５％硫酸镁１０～４０ｍＬ，用５％葡萄糖注射液稀释成１％浓度缓慢静滴。 Magnesium is one of the essential elements of the human body. Magnesium is involved in all important aspects of life activities and is an important activator of various enzyme systems in cell metabolism. In recent years, magnesium sulfate has been found to be effective in the treatment of pneumonia, pulmonary heart disease, coronary heart disease, hypertension, gastroduodenal ulcer, acute diarrhea, acute nephritis, migraine headaches, tetanus, and infant tetany. New use. Commonly used 25% magnesium sulfate 10 ~ 40mL, diluted with 5% glucose injection to 1% concentration slow intravenous infusion.