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Heart Health

Red Yeast Rice

Also known as: RYR, Monascus purpureus

A
Evidence

Contains natural statins (monacolin K). Effective but needs same precautions as Rx statins.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

Add Thorne Red Yeast Rice to your stack — free
The highest-scored Red Yeast Rice product in our catalog (92/100). Track dose and overlaps in the app.
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Every Red Yeast Rice product we have scored

Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.

Common questions

How much Red Yeast Rice should I take?

The typical range is 1200-2400mg with 10mg monacolin K. Ongoing for lipid management

When should I take Red Yeast Rice?

Evening (like statins). Yes.

Which form of Red Yeast Rice is best?

Standardized extract — Monacolin K content specified. Other forms in the catalog: Unstandardized.

Is Red Yeast Rice safe?

Commonly reported: Muscle pain, GI upset, Headache. Serious warnings: Same as prescription statins (muscle damage, liver), Contamination risk. Monitor liver like statins

Which Red Yeast Rice supplement scores highest?

Thorne Red Yeast Rice, at 92/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.

Primary uses

  • Cholesterol
  • LDL reduction
  • Lipid support

What systematic reviews concluded

Outcomes that systematic reviews of Red Yeast Rice reached a verdict on: 3 with a benefit, 1 with no effect, 3 unclear. Each is quoted from a review and linked to it on PubMed. How these were read.

Reviews found a benefit (3)

Benefittotal cholesterol
“RYR extract consumption statistically significantly reduced total cholesterol (mean absolute reduction: 37.43 mg/dL; 95% confidence interval [CI]: -47.08, -27.79) and low-density lipoprotein cholesterol (LDL-C; mean absolute reduction: 35.82 mg/dL; 95% CI: -43.36, -28.29), but not high-density lipoprotein cholesterol, triglycerides and apolipoproteins A-I and B.” PMID 38794691 · 8 reviews
Every supplement reviewed for cholesterol & triglycerides →
Benefitldl cholesterol
“RYR exerts a clinically and statistically significant reduction of 1.02 mmol/L LDL cholesterol.” PMID 25897793 · 8 reviews
Every supplement reviewed for cholesterol & triglycerides →
Benefitc-reactive protein
“"RYR plus conventional therapy" exhibited significant lowering effects on serum total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and CRP but exhibited no significant effect on systolic BP, diastolic BP, triglycerides (TG), and high-density lipoprotein cholesterol (HDL-C) compared with "placebo plus conventional therapy."” PMID 26167669
Every supplement reviewed for inflammation →

Reviews found no effect (1)

No effectapolipoproteins
“but not high-density lipoprotein cholesterol, triglycerides and apolipoproteins A-I and B.” PMID 38794691
Every supplement reviewed for cholesterol & triglycerides →

Not enough to say: hdl cholesterol; triglycerides; blood pressure.

How it works

  • Contains monacolin K (lovastatin)
  • HMG-CoA reductase inhibition
  • LDL reduction

Dosage

Typical range
1200-2400mg with 10mg monacolin K
Timing
Evening (like statins)
With food
Yes
Duration
Ongoing for lipid management
Special populations
High cholesterol, statin-intolerant

Forms

  • Standardized extract
  • Unstandardized

Safety

Common side effects

  • Muscle pain
  • GI upset
  • Headache

Contraindications

  • Liver disease
  • Pregnancy
  • Concurrent statin use

Products containing Red Yeast Rice

Top-scoring supplements in our catalog that list Red Yeast Rice on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

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Evidence notes

Contains natural statin compounds

Grade A: Multiple well-designed human trials support the main claims.

Related in Heart Health

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.