Red Yeast Rice contains hundreds of potentially active ingredients including a range of HMG-CoA reductase inhibitors, the most effective agents known to inhibit the body's manufacture of cholesterol. One of these ingredients is identical to lovastin, the drug in Merck Inc.'s Mevacor. Mevacor is one of the most widely-prescribed drugs for lowering cholesterol -- but ir rarely an option for those 58 million Americans with moderately high levels of cholesterol.
