<prompt> Which of the drug Does not have active metaboliteDiazepamPropanonolAllupurinolLisnopril  <response>: Ref KDT 6e p485. Captopril and lisinopril are ACE inhibitors that are not prodrugs. Diazepam produce many active metabolites like.oxazepam. Propranolol can produce 4-hydroxypropanolol .which has b-antagonist activity. Allopurinol gives rise to oxypurinol which can inhibit xanthine oxidase. 