Red Yeast Rice
Other ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Red yeast rice is rice fermented with Monascus species and may contain monacolin K, which is chemically identical to lovastatin. It can lower LDL cholesterol when active monacolins are present, but product potency is highly variable and FDA restricts products with added or enhanced lovastatin-like content. Safety concerns mirror statins, including myopathy, liver injury, drug interactions, pregnancy risk, and citrinin contamination.
Exploratory record, not a reviewed medical publication.
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This generated database record has not completed a claim-level review by a qualified human medical reviewer. Bibliography links and evidence labels are not approval. The page remains available for reference and is excluded from search indexing.
What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Red Yeast Rice is an other most often used for can lower ldl cholesterol when active monacolins are present, may reduce total cholesterol, may modestly lower triglycerides. NutriStack rates the overall evidence as moderate. A typical adult dose is Do not dose by red yeast rice milligrams alone; studies used 1,200-2,400 mg/day, but monacolin content varies widely and added or enhanced lovastatin-like products cannot be marketed as US dietary supplements, commonly taken as citrinin-tested red yeast rice with transparent monacolin content where legally available; clinician-supervised use preferred. This profile indexes 3 sources.
- Muscle pain, weakness, cramps, or rare rhabdomyolysis
- Elevated liver enzymes or hepatotoxicity
- GI upset, headache, or dizziness
- Pregnancy, trying to conceive, and breastfeeding
- Active liver disease, unexplained elevated liver enzymes, or heavy alcohol use
The bottom line
Evidence rating moderate. Most-documented uses: can lower ldl cholesterol when active monacolins are present, may reduce total cholesterol, may modestly lower triglycerides. 3 sources indexed (2018–2024), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Monacolin K inhibits HMG-CoA reductase, reducing hepatic cholesterol synthesis and increasing LDL receptor-mediated clearance, the same core mechanism as lovastatin. Other monacolins and fermentation products may contribute, but clinically meaningful lipid lowering generally implies statin-like exposure. Because monacolin content is often undisclosed or variable, dose-response and risk are less predictable than prescription statins.1,2
Dosing & protocol.
Take with food for tolerability. Avoid grapefruit-like CYP3A4 interaction contexts, alcohol excess, and combination with other statin-like or hepatotoxic products unless supervised.
What it actually costs.
Real-world pricing across three quality tiers. Assumes Citrinin-tested red yeast rice capsule.
Testing for citrinin and transparent monacolin content increase cost but are central to safety. Updated 2026-06-04.
Full safety detail.
Side effects
- Muscle pain, weakness, cramps, or rare rhabdomyolysis
- Elevated liver enzymes or hepatotoxicity
- GI upset, headache, or dizziness
- Kidney injury risk if contaminated with citrinin or from rhabdomyolysis
- Drug interactions similar to lovastatin
Contraindications
- Pregnancy, trying to conceive, and breastfeeding
- Active liver disease, unexplained elevated liver enzymes, or heavy alcohol use
- History of statin-induced rhabdomyolysis or severe statin intolerance without clinician guidance2
- Use with statins, fibrates, cyclosporine, strong CYP3A4 inhibitors, or high-dose niacin without clinician supervision2
- Kidney disease or concern for citrinin-contaminated products
- Children and adolescents unless prescribed by a clinician
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Meta-analyses & systematic reviews
1- 1Red Yeast Rice for Hyperlipidemia: A Meta-Analysis of 15 High-Quality Randomized Controlled TrialsGerards MC et al. · Frontiers in Pharmacology · 2022
Pooled RCTs found reductions in LDL-C, total cholesterol, and triglycerides compared with controls.
Reference material
2- 2Red Yeast RiceNational Center for Complementary and Integrative Health · NCCIH · 2024
Products with substantial monacolin K can act like statins and carry statin-like risks.
- 3Scientific opinion on the safety of monacolins in red yeast riceEFSA Panel on Food Additives and Nutrient Sources added to Food · EFSA Journal · 2018
Monacolin exposure from red yeast rice can reach therapeutic lovastatin ranges and has been associated with severe adverse effects.
Common questions.
Quick answers about Red Yeast Rice, drawn from the data on this page.
What is Red Yeast Rice?
Red yeast rice is rice fermented with Monascus species and may contain monacolin K, which is chemically identical to lovastatin. It can lower LDL cholesterol when active monacolins are present, but product potency is highly variable and FDA restricts products with added or enhanced lovastatin-like content. Safety concerns mirror statins, including myopathy, liver injury, drug interactions, pregnancy risk, and citrinin contamination.
What is Red Yeast Rice used for?
Commonly cited benefits of Red Yeast Rice include: Can lower LDL cholesterol when active monacolins are present; May reduce total cholesterol; May modestly lower triglycerides; May be considered only as clinician-supervised lipid support in selected patients. NutriStack rates the overall evidence as moderate.
What is a typical dose of Red Yeast Rice?
A typical adult dose of Red Yeast Rice is Do not dose by red yeast rice milligrams alone; studies used 1,200-2,400 mg/day, but monacolin content varies widely and added or enhanced lovastatin-like products cannot be marketed as US dietary supplements. The commonly recommended form is Citrinin-tested red yeast rice with transparent monacolin content where legally available; clinician-supervised use preferred. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Red Yeast Rice?
Reported side effects include muscle pain, weakness, cramps, or rare rhabdomyolysis, elevated liver enzymes or hepatotoxicity, gi upset, headache, or dizziness, kidney injury risk if contaminated with citrinin or from rhabdomyolysis, drug interactions similar to lovastatin. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Red Yeast Rice?
NutriStack rates this as Moderate, meaning several aligned RCTs or one large RCT plus supporting reviews. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Red Yeast Rice in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.