药品的有效期是指药品在一定的贮存条件下,能够保持质量的期限。识别药品的有效期有如下几种方法:1 直接标明有效期某药品的有效期为2004年,月18一号,表刁、木品至2004年!月19号起便不得使用。 2直接标明失效期某药品的失效期为2005年5月6号,表示本品可 The expiration date of the drug refers to the period that the drug can maintain its quality under certain storage conditions. Identify the validity of drugs in the following ways: A direct indication of the validity of a drug is valid for 2004, on the 18th, the table Diao, wood until 2004 on the 19th will not be used. 2 directly indicate the expiry date of a drug expire on May 6, 2005, said the product can be