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It is a legal obligation for all conventional pharmaceutical products carrying the dates of manufacture and expiry on the label. The period between these two dates is called the ‘life period’ or ‘shelf-life’ of a product. It is the time over which the quality of a product remains within specifications by which the efficacy and safety of the product can be assured. Shelf-life is applicable on Unani drugs too, however, not the same as the conventional pharmaceuticals. As long before Unani physicians have proposed the concept of Aamare Advia (ages of drugs) mainly for single drugs. In true sense, the two concepts are the same but the way of estimation of ‘shelf-life’ is different. In conventional pharmaceutics, it is considered in terms of stability studies whereas in Unani medicine it has been prefixed. The present review will explain these concepts with a comparison.

Age of Unani drugs and the concept of shelf-life: A comparative assessment