Captopril.
D001794:Blood Pressure / Q000187:drug effects; D002216:Captopril / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D011392:Proline / Q000031:analogs & derivatives*
D011392:Proline; D002216:Captopril