<prompt> What is prodrugInactive drugs convert into active metabolitesActive drugs converts into inactive metaboliteMeasure of the amount of drug necessary to produce an effect of a given magnitudeBind to a receptor and elicit a biologic response  <response>: A. i.e. Inactive drug convert into active metabolites 23- 24- KDT 6thFew drugs are inactive as such and need conversion in the body to one or more active metabolites. Such a drug is called PRODRUGAdvantages1. More stable2. Better bioavailability3. Less side effects and toxicityPOTENCY - a measure of the amount of drug necessary to produce an effect of a given magnitude EC50 is the concentration of the drug that produce a response equal to 50 of the maximal response The potency of the drug can be compared using EC50, the smaller the EC50, the more potent the drug 