In a recent study in rats, L-arginine, a nonessential amino acid, was found to lessen the severity of monocrotaline-induced hypertension by, among other things, restoring the nitric oxide in the linings of blood and lymph systems. Other actions included decreasing right ventricular systolic pressure (RVSP) right heart hypertrophy, and mortality.

The abstract was complex and I found myself having to look up a bunch of terms, but it sounds like this discovery for generating nitric oxide is highly promising for treating the silent killer.