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Red yeast rice (Hong Qu) is a substance made by fermenting a type of red yeast called Monascus purpureus over rice. Research studies show that Hong Qu (Monascus) invigorates blood circulation and eliminates blood stasis. It also strengthens the spleen and stomach and promotes digestion. Since the 1970s, human studies have reported that red yeast lowers blood levels of total cholesterol, low-density lipoprotein/LDL ("bad cholesterol"), and triglyceride levels.