Beta-sitosterol, alone as well as in combination with other similar plant sterols, is one of a group of organic compounds acquired from seabuckthorn. It is a provitamin D and a powerful treatment for burns. It is a cholesterol antagonist and is recommended as a prophylactic agent in the treatment of atherosclerosis. It’s ability to block the absorption of cholesterol seems to be the reason behind diminishing cholesterol levels. Beta-sitosterol has also proven useful in easing the symptoms associated with benign prostatic hyperplasia.