Cardio-K+ Cholesterol (60) BioMedical. Clinical studies have shown the effects of red yeast rice preparations with a known 10mg Monacolin K content reduce both LDL concentrations and also total cholesterol levels.. The European Food Safety Authority has recently approved Monacolin K (nature’s statin) as an ingredient that can help maintain normal LDL cholesterol levels.. Reduce Cholesterol Naturally with Cardio-K +. Monacolins are naturally occurring substances found in Red Yeast Rice, however, it is Monacolin K that is the active ingredient that works in a very similar way to some pharmaceutical grade statins, and the big difference being it is naturally present not chemically manufactured.. Red Yeast Rice is made by fermenting a type of red yeast called Monascus Purpureus over rice.