老年人使用精神药物者甚多,有报告在综合医院住院的老年病人中,有三分之一至少使用一种药物,多种用药也随着年龄而增加。老年人由于生物学情况改变,药物的作用也有不同,例如:一、吸收:由于服用抗酸剂、氧化镁乳剂或抗胆碱能药物可能使吸收变慢,利眠宁亦然。二、分布:脂肪与肌肉的比值增加,因此 In the elderly, there are many people who use psychotropic substances. One third of the elderly patients reported to be hospitalized in general hospitals use at least one drug and multiple medications increase with age. Elderly people due to biological changes in the role of the drug is also different, for example: First, the absorption: As taking antacids, magnesium oxide emulsion or anticholinergic drugs may slow down the absorption, and Sheridanning also. Second, the distribution: the ratio of fat and muscle increased, therefore