临床用药的目的主要是治疗和预防疾病,当达到预期目的后就应及时停药。有些疾病用药治愈后,为巩固疗效,避免复发或“反跳”,往往延长用药时间。如何合理停药和延长用药,应根据病情而定.合理停药,也是合理用药的一个重要组成晨分。1 及时停药防止蓄积中毒依赖性和成瘾性的形成由于长期服用某些药物而引起蓄积中毒或引起各种药源性疾病的例子不胜枚举。例如,应用依未丁 The main purpose of clinical medication is the treatment and prevention of disease, when the desired purpose, it should be promptly discontinued. After the cure of some diseases, in order to consolidate the efficacy, to avoid recurrence or “rebound”, often prolong the medication time. How to rationalize withdrawal and prolongation of medication, should be based on the condition may be reasonable to stop the drug, but also an important component of rational use of morning minutes. A timely withdrawal to prevent accumulation of drug dependence and addiction due to the long-term use of certain drugs caused by accumulation of poisoning or cause a variety of drug-induced diseases are numerous examples. For example, Ivodin