Veterinary drug expiration date, expiry date, responsible period

1 Valid period of veterinary drugs The period of validity of veterinary drugs refers to the period during which veterinary drugs can maintain quality under the specified storage conditions. Drugs with better stability generally have slower drug efficacy and lower toxicity during storage. However, there are some drugs with poor stability. During the storage process, the efficacy may be reduced, the toxicity may be increased, and some may not even be medicinal. The period of validity must be set for such drugs, and the period of validity must be dealt with in accordance with regulations. The validity period of veterinary drugs is calculated from the veterinary drug production date (production lot number). For example, the batch number of a batch of veterinary drugs is 960708, and the period of validity is 2 years. That is, the validity of the veterinary drugs expires on July 8, 1998. If it is specifically marked as valid until June 1998, it indicates that the veterinary drug is effective until June 30, 1998. 2 The expiration period of veterinary drugs is the date when veterinary drugs exceed the safe and effective range. If it is stated that the expiry date is July 1, 1997, it means that the veterinary drugs can be used until June 30, 1997, that is, July 1st. Although the validity period and expiry date of veterinary drugs are somewhat different in terms of representation, there are some differences in calculation. However, any veterinary drug that exceeds the expiration date or reaches the expiry date cannot be sold or used. 3 Responsible period The responsible period is the period of responsibility for the product quality within the contract period (usually 1 to 3 years) between the production company and the operating and use unit, that is, the economic responsibility period. Mainly to solve the problem of the economic responsibility after the deterioration of manufactured drugs. Under the stipulated storage conditions, the drugs will be degraded during the period of responsibility, and the economic losses will be borne by the manufacturer. If the factory is overcharged, it will not be responsible. Responsible period is neither a valid period nor an expiration date, which is generally not stated on the packaging label. Any veterinary drug that exceeds the responsible period will continue to be sold and used as long as there is no abnormality or deterioration.

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