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Red Yeast Rice (Monacolin K)
Fermented rice containing natural statins that effectively lower LDL cholesterol — the original statin.
What the evidence says
Red Yeast Rice appears to help in 15 of 15 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 2008–2026 with a typical study size of 143 participants.
Based on 39 studies · 16 meta-analyses · 17 RCTs · 46,002 total participants
Confidence
HighWhat the studies found
By outcome
Red Yeast Rice has an evidence score of 7.5/10 — strong evidence based on 39 indexed studies, including 15 meta-analyses. Fermented rice containing natural statins that effectively lower LDL cholesterol — the original statin.
The commonly studied dose of Red Yeast Rice is 1200-2400mg providing 10mg monacolin K. Research points to an estimated optimal dose around 10mg, with a minimum effective dose near 3mg. Individual response varies — start low and adjust.
The best time to take Red Yeast Rice is in the evening. Take it with food. Red yeast rice contains monacolin K (identical to lovastatin), which inhibits HMG-CoA reductase — the rate-limiting enzyme in cholesterol biosynthesis.
Berberine
Likely helpsActivates AMPK to regulate blood sugar, improve insulin sensitivity, and support lipid metabolism — comparable to metformin in some trials.
Nicotinamide Riboside
Mostly mechanism / observationalA vitamin B3 precursor that efficiently raises cellular NAD+ levels, supporting energy metabolism, mitochondrial function, and healthy aging.
Last reviewed May 2026 · evidence from 38 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Red Yeast Rice is rice fermented with Monascus purpureus yeast, producing monacolin K — chemically identical to lovastatin. Used for centuries in Chinese medicine, it effectively lowers LDL cholesterol. However, monacolin content varies widely between products, and it carries similar risks to pharmaceutical statins. A natural option for cholesterol but requires careful sourcing and monitoring.
Blocks cholesterol synthesis
How Red Yeast Rice works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
1200-2400mg providing 10mg monacolin K
Take with food
| Form | Type |
|---|---|
| 💊Standardized extract with verified monacolin K content | Recommended |
| 🧪Whole red yeast rice powder | Alternative |
CRITICAL: Monacolin K content varies 0-10mg+ between products. Choose brands that verify and disclose monacolin K content.
Minimum: 8 weeks
Optimal: 16 weeks
Cycling: Not required
Note: Take in evening with dinner, same timing as prescription statins.
Based on RCT showing 16.77% reduction with 3mg and 26.46% reduction with 10mg monacolin K. Conservative effectiveness scaling due to limited dose-response data and variable study quality noted in meta-analyses.
15-30% decrease in LDL cholesterol
Reduced total cholesterol
Contraindicated — same as statins
May have same issues — try cautiously
Do NOT combine — identical mechanism, additive effects
Inhibits metabolism like lovastatin
Increased myopathy risk
Increase monacolin K levels
Risk of statin overdose, muscle damage, rhabdomyolysis
Risk of muscle damage, liver toxicity
Risk of statin overdose, muscle damage
Tip: Same as statins — discontinue if occurs; add CoQ10
Tip: Take with food
Tip: Monitor liver enzymes
Red Yeast Rice is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are muscle pain/weakness, GI upset, liver enzyme elevation. Use caution if any of these apply to you: Liver disease; Pregnancy/nursing; History of statin intolerance.
Alpha Lipoic Acid
Likely helpsUniversal antioxidant that works in both water and fat, supporting blood sugar control, nerve health, and cellular energy.
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