Solaray's Red Yeast Rice is a popular cholesterol-support supplement based on a unique culinary and medicinal ingredient native to China. Red yeast rice is produced by fermenting red yeast (Monascus purpureus) on white rice, after which it can be used in cooking or as a medicinal herb. Red yeast rice supplements like this one from Solaray are often used along with CoQ-10, oat bran fiber and other approaches to support healthier cholesterol levels. Do not, however, combine red yeast rice with cholesterol medications unless instructed to do so by your doctor. The lowest effective dose of Red Yeast Rice varies from person to person but is generally between 600-2400 mg per day. Allow 8-12 weeks of consistent use before evaluating your results via a blood cholesterol test.