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生活中经常有两种或两种以上药物同时或先后服用的现象,我们称之为联合用药。如感冒时常同时服止咳药、退热药,甚至抗生素等;再如老年人易患多种疾病,往往也需服多种药物。值得注意的是:同时服用的药物越多,药物间产生相互作用的机率越大,其结果可能有利于治疗、增进健康,也可能不利于治疗,甚至有害于健康。合理的联合用药可使药物疗效提高,毒副反应降低。如抗结核药利福平、异烟肼、链霉素、乙胺丁醇单独应用疗效不佳,且由于易产生耐药性而使治疗失败。为此常采用二种或三种药物联合应用,使药
Often there are two or more drugs in life at the same time or successively taking the phenomenon, we call it a combination. If the cold often take cough medicine at the same time, antipyretics, and even antibiotics; another example elderly susceptible to many diseases, often also need to take a variety of drugs. It is noteworthy that: the more drugs taken at the same time, the greater the chance of interaction between drugs, the results may be beneficial to treatment, improve health, may also be detrimental to treatment, and even harmful to health. Rational combination therapy can improve the efficacy of drugs, reduce toxicity. Such as anti-TB drugs rifampicin, isoniazid, streptomycin, ethambutol alone poor efficacy, and due to easy to produce drug resistance and treatment failure. To this end often used two or three drugs in combination, so medicine