The monacolin K content of one proprietary preparation of red yeast rice used in a clinical trial was
calculated to be 0.2 percent of the total product.2 This trial used a daily dosage of 2.4 grams of red yeast rice
(the corresponding monacolin K dosage would be 4.8 mg). The dosages used in clinical trials of lovastatin
are 20-40 mg daily.4 It is unlikely the lipid-lowering effects found in this study was a result of the monacolin
K content alone.