Choleast (Red Yeast Rice) helps maintain healthy cholesterol levels and healthy lipid particle size and number. Maintaining an optimal LDL cholesterol is an important component of maintaining good cardiovascular health. Numerous studies in China and the United States have concluded that preparations of red yeast rice help to maintain blood cholesterol levels already in the normal range. Choleast contains Monascus purpureus, a red-pigmented yeast grown on rice.