Pharmacology Pharmacodynamics 04e49f01 Shelf life of a drug is:- A Time from manufacturing date to expiry date B The time after which the drug loses its potency C Time in which 93% of drug is eliminated D The time after which drug become toxic High-Yield Explanation Shelf life: It is the time for which drug can be sold by the pharmacist. It is calculated as time between expiry date and manufacturing date.