Safety Profile
Overall safety rating: Safe with Caution
Red Yeast Rice Side Effects & Safety
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Potential Side Effects
- GI discomfort (bloating, gas, heartburn) in 5-10% of users
- Muscle pain or weakness (myalgia) — same mechanism as statins
- Elevated liver enzymes at high doses — periodic monitoring recommended
- Headache and dizziness (uncommon)
Drug & Supplement Interactions
- Statin drugs — do not combine, as monacolin K is identical to lovastatin and effects are additive
- CYP3A4 inhibitors (grapefruit, ketoconazole, erythromycin) — may increase monacolin K levels
- Fibrates and niacin — increased myopathy risk when combined
- Cyclosporine — significantly increases monacolin K blood levels
Maximum Dose
Do not exceed: 4800mg/day (higher doses increase risk of statin-like side effects)
References
- Lu Z, Kou W, Du B, Wu Y, Zhao S, Brusco OA, Morgan JM (2008). Effect of Xuezhikang, an extract from red yeast Chinese rice, on coronary events in a Chinese population with previous myocardial infarction. American Journal of Cardiology. DOI PubMed
- Li Y, Jiang L, Jia Z, Xin W, Yang S, Yang Q, Wang L (2014). A meta-analysis of red yeast rice: an effective and relatively safe alternative approach for dyslipidemia. PLoS ONE. DOI PubMed
- Becker DJ, Gordon RY, Halbert SC, French B, Morris PB, Rader DJ (2009). Red yeast rice for dyslipidemia in statin-intolerant patients: a randomized trial. Annals of Internal Medicine. DOI PubMed