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有些药品和生物制品,如青霉素、链霉素等抗菌素,胰岛素、催产索、三磷酸腺苷等生化制剂,痘苗、胎盘球蛋白等生物制品以及少数化学药品、生药制剂等因本身性质不够稳定,易受外界条件(如空气、潮湿、光线、温度等各种因素)的影响,会逐渐变质失效。有的仅是效能下降,有的则可能产生毒性。为了保证用药的安全与有效,规定了“效期”。这是通过科学实验和实践考核,根据其本身变化的规律和国内的实际情况,规定了在一定的贮藏条件下能保持质量的期限。医疗单位应在所规定的期限内使用。
Some medicines and biological products such as penicillin, streptomycin and other antibiotics, insulin, oxytocin, adenosine triphosphate and other biochemical preparations, vaccinia, placental globulin and other biological products as well as a small number of chemicals, crude drug preparations due to their nature is not stable enough, vulnerable to the outside world Conditions (such as air, humidity, light, temperature and other factors), will gradually deteriorate failure. Some only reduce efficacy, while others may produce toxicity. In order to ensure the safety and effectiveness of medication, the “expiration date” is stipulated. This is through scientific experiments and practical assessment, according to its own changes in the law and the actual situation in the country, provides for a certain storage conditions to maintain the quality of the deadline. Medical units should be used within the deadline set.