Red Yeast Rice
herbs
Red yeast rice is a traditional Chinese fermented product created by cultivating yeast (Monascus purpureus) on rice, containing naturally occurring compounds including monacolin K which may support cholesterol levels. It has been used in Asian cuisine and traditional medicine for centuries as both a food colouring and health supplement.
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Benefits
Dosage
Typical Dose
600-2400 mg daily in divided doses
Upper Limit
2400 mg daily
Timing
With meals to enhance absorption and reduce gastrointestinal upset
Forms & Bioavailability
Capsules
Good; standardised extracts typically provide 2-10 mg monacolin K per capsule
Powder
Moderate; variable monacolin K content depending on fermentation process
Whole grain
Lower; less concentrated but retains associated beneficial compounds
Side Effects
Interactions
Research Summary
Clinical evidence demonstrates red yeast rice can modestly reduce LDL cholesterol by 15-30%, though efficacy varies depending on monacolin K content and individual genetics. The active compound monacolin K functions similarly to statin medications, raising safety concerns regarding muscle-related side effects and liver function. Regulatory status remains inconsistent globally; some markets restrict its sale due to pharmaceutical-level activity whilst others regulate it as a food supplement.
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The Bottom Line on Red Yeast Rice
Red Yeast Rice is moderately researched with promising but sometimes mixed evidence.It is most commonly used for cholesterol support and cardiovascular health. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Red Yeast Rice
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