Shelf-life is the period during which a DS and DP remains within the approved specifications, provided that it is stored under the approved conditions in the approved packaging.

• A. True
• B. False
• C. It refers to the surface area of packaging
• D. It refers to the cost of packaging

Answer: (A)

Shelf-life is defined by how long the drug substance and the drug product stay within their approved quality specifications when stored under the specified conditions in the approved packaging. This concept hinges on stability data: the product is tested over time under defined temperatures, humidity, light, and packaging to ensure it continues to meet identity, potency, purity, and safety limits. If these criteria remain met, the product is considered suitable for use for that period; once they shift outside the specifications, the product is no longer within its shelf-life.

The packaging and storage conditions are integral because they influence the rate of degradation. Packaging that provides adequate protection and storage that keeps conditions constant help maintain quality for the stated shelf-life. Choices referencing surface area of packaging or packaging cost are not related to how long the product remains within specifications, so they don’t define shelf-life.

Therefore, the statement is true.