Legal analysis: general drugs are prohibited from being sold within 3 months of validity, even if they exceed 3 months of validity. But it is not forbidden to sell, in the case of sufficient supply. When consumers know that general drugs will not go to the counter within 3 months after the expiration date, and there is a shortage of drugs, even if the course of treatment is within the expiration date 1 month. The expiration date of a drug is usually indicated by its expiration date or expiration date. Among them, the expiration date means that the quality of the drug can reach the specified time limit under the specified storage conditions. The period of validity refers to the time from the date of production to the expiration of the specified period. Drugs should meet the national drug standards. If the drug quality standard approved by the drug supervision and administration department of the State Council is higher than the national drug standard, it shall be implemented in accordance with the approved drug quality standard; If there is no national drug standard, it shall conform to the approved drug quality standard.

Legal basis: Article 49 of the Drug Administration Law of People's Republic of China (PRC) shall be printed or marked with instructions as required.

Labels or instructions shall indicate the general name, ingredients, specifications, marketing license holders and their addresses, manufacturers and their addresses, approval number, product batch number, production date, expiration date, indications or functional indications, usage, dosage, contraindications, adverse reactions and precautions. The words in the labels and instructions should be clear, and the production date, expiration date and other matters should be clearly marked for easy identification.

The labels and instructions of narcotic drugs, psychotropic drugs, toxic drugs for medical use, radioactive drugs, drugs for external use and over-the-counter drugs shall indicate the prescribed signs.