Gemopatrilat (INN) is an experimental drug that was never marketed. It acts as a vasopeptidase inhibitor. It inhibits both angiotensin-converting enzyme (ACE) and neutral endopeptidase (neprilysin). Gemopatrilat (INN) is an experimental drug that was never marketed. It acts as a vasopeptidase inhibitor. It inhibits both angiotensin-converting enzyme (ACE) and neutral endopeptidase (neprilysin).