"The drug is being developed by Swiss pharmaceutical company Novartis, and was recently put to the test in the largest trial ever undertaken in heart failure, involving more than 8,400 patients. Compared to an existing heart drug, called enalapril, LCZ696's effects were so significant and so overwhelmingly positive throughout this trial, a team of independent investigators ended it early. This is the first time in 25 years that a new drug has been proven to be more effective than existing heart medications."