<prompt> Which of the following drug is inactive when given as oral dosage form ?ClonidineEnalaprilStreptomycinMorphine  <response>: Prodrugs are the drugs which are inactive and are activated in the body. Enalapril is an ACE inhibitor and is a prodrug. Impoant examples of prodrugs include: All ACE inhibitors except captopril and lisinopril Prefer Prednisone Proton pump inhibitors Proguanil Doing Dipivefrine M Mercaptopurine Methyldopa Minoxidil D Levo-Dopa In Irinotecan Clinical Cyclophosphamide Clopidogrel Carbimazole Subjects Sulfasalazine 