所谓“有效期”是指药品在规定的贮存条件下,能保持质量的期限,通常药品标签上注明有效期的年月,就是指可以使用到所标明的月份的最后一天,次日即无效。也有的从药厂的生产日期算起,在标签上先打印批号:一般采用6位数字,前2位数字表示年份,中间2位表示月份,末2位表示日期, The so-called “expiration date ” refers to the drug in the provisions of the storage conditions, to maintain the quality of the deadline, usually marked on the drug label expiration date, means that you can use the marked the last day of the month, the next day is invalid . Some also from the date of manufacture of the pharmaceutical factory, first printed on the label batch number: generally 6 digits, the first two digits that the year, the middle two said the month, the last two said the date,