Red Yeast Rice Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Red Yeast Rice against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Red Yeast Rice is a dietary supplement by Woodstock Vitamins with 1 active ingredient. Its ingredients are commonly taken for high cholesterol, heart health, metabolic syndrome.Based on those ingredients, 477 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Red Yeast Rice. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Red Yeast Rice by Woodstock Vitamins
Ask about any prescription or over-the-counter medication and we check it for interactions with Red Yeast Rice by Woodstock Vitamins — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Red Yeast Rice by Woodstock Vitamins
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains one active ingredient: red yeast rice. Red yeast rice is a fermented rice product that naturally contains lovastatin, a statin-like compound that works on cholesterol in your body much like prescription statin drugs do.
The dose and potency of lovastatin in red yeast rice supplements varies from batch to batch—quality control isn't as strict as it is for prescription medications. The inactive ingredients (the capsule, cellulose, magnesium stearate, and silica) are binders and fillers that hold the supplement together.
Does it work?
Moderate evidence
The evidence we hold shows red yeast rice is possibly effective for lowering cholesterol in people with HIV/AIDS-related dyslipidemia (abnormal cholesterol in people with HIV) and possibly effective for reducing the risk of heart attack. These ratings mean the research is promising but not conclusive—more rigorous studies are needed to be certain.
How safe is it?
Well-documented data
Red yeast rice is generally well tolerated at the doses typically used, but side effects do occur. Most common are abdominal discomfort, diarrhea, dizziness, flatulence, headache, heartburn, nausea, and muscle pain.
Rare but serious adverse effects include liver damage (hepatotoxicity) and severe muscle breakdown (rhabdomyolysis), both linked to the lovastatin content. A small number of people have reported rash, itching, hair loss, or nerve tingling, and one case of nerve damage in the extremities was documented in a person taking red yeast rice for 3 years.
The product's quality varies between manufacturers, and contaminated batches have been reported to cause kidney damage. Red yeast rice is unsafe during pregnancy because of its statin-like effects.
Safety during breastfeeding hasn't been adequately studied—talk with your doctor or pharmacist before using it if you're nursing.
Meds to double-check
Moderate interaction found
Before taking this product, double-check with your pharmacist if you take any statin drug (atorvastatin, simvastatin, lovastatin, etc.), a CYP3A4 inhibitor (certain antifungals or HIV medications), gemfibrozil, cyclosporine, high-dose niacin, or any medication known to damage the liver. All carry Moderate risk of serious muscle or liver damage when combined with red yeast rice.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
Red yeast rice is reasonable to consider if you're looking for a plant-derived approach to cholesterol, but be aware it works like a prescription statin and carries similar risks. If you take any statin, cholesterol medication, antifungal, immunosuppressant, or certain HIV drugs, talk to your pharmacist before starting—the interaction risk is real.
Pregnant people and those breastfeeding should skip it.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated May 23, 2024.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Red Yeast Rice, straight from the product label.
| Brand | Woodstock Vitamins |
|---|---|
| Barcode (UPC) | 719985085314 |
| Net contents | 60 Vegan Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 23, 2024 |
| DSLD ID | 310304 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Red Yeast Rice by Woodstock Vitamins, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Red Yeast Rice | 600 mg | -- |
Other ingredients: Capsule, Cellulose, Magnesium Stearate, Silica
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation
Contains no artificial colors, flavors or preservatives; no wheat, gluten, soy, milk, eggs, peanuts, tree nuts, crustacean shellfish or fish.
Our product is soy free, and tested to ensure the absence of aflatoxin B1 and citrinin.
This popular supplement is ideal for individual wellness programs.
We guarantee our supplements for potency and purity
Soy free Double Verified GF Gluten Free
Ideal for personalized wellness programs
Formula
Red Yeast Rice has been used in traditional cooking for centuries to promote well being. It is produced by the fermentation of red yeast (Monascus purpureus) with white rice.
Storage
Store in a cool, dry place.
Precautions
To report a serious adverse event, call 1-888-710-0006
Keep out of reach of children.
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: Take one capsule daily with a meal or as directed by your health care professional.
Seals/Symbols
Double Verified GF Gluten Free
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Red Yeast Rice by Woodstock Vitamins label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Red Yeast Rice by Woodstock Vitamins
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.
Red Yeast Rice
Interacts with477 drugs
Red yeast rice contains monacolin K, which is chemically identical to the prescription statin lovastatin, and it can lower LDL ('bad') cholesterol. Be...
Red Yeast Rice monograph & interactionsOther (inactive) ingredients: Capsule, Cellulose, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
Red Yeast Rice by Woodstock Vitamins Drug Interactions
HelloPharmacist Interaction Report
Woodstock Vitamins Red Yeast Rice is a single-ingredient supplement that does interact with medications.
Because red yeast rice contains the statin drug lovastatin at varying levels, combining it with other statins (like atorvastatin or simvastatin) carries a Moderate risk of serious side effects, including muscle breakdown (rhabdomyolysis) and muscle damage (myopathy).
Read the full breakdown — every affected drug type, severity by severity
You'll want to be cautious with several other drug types. Drugs that inhibit the liver enzyme CYP3A4 — including certain antifungals, some HIV medications, and a few others — can raise lovastatin levels from the supplement, raising the risk of muscle and liver damage.
Gemfibrozil (a cholesterol-lowering drug), cyclosporine (an immunosuppressant), and high-dose niacin all carry a Moderate risk of muscle breakdown when combined with red yeast rice's lovastatin. Hepatotoxic drugs (medications that can damage the liver) may also carry additional liver risk in combination, since red yeast rice itself can affect liver enzymes.
Altogether, these interactions span 459 individual medications. Before you start this supplement, check your exact medications with the search tool on this page—especially if you take a statin, cholesterol medication, antifungal, or immunosuppressant drug.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Red Yeast Rice?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Red Yeast Rice interact with 477 drugs. Click any drug to see the details.
1 of the 1 ingredient in Red Yeast Rice interact with drugs. Each result below shows which ingredient is responsible. Red Yeast Rice
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + 6-mercaptopurine interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Abacavir, Lamivudine interactionAbametapirXeglyze
How Abametapir interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceCytochrome P450 3a4 (cyp3a4) Inhibitors Moderate
Interaction Summary
Theoretically, drugs that inhibit the CYP3A4 enzymes might increase levels of lovastatin from red yeast rice.
Read the full Red Yeast Rice + Abametapir interactionAbiraterone
How Abiraterone interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceCytochrome P450 3a4 (cyp3a4) Inhibitors, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, drugs that inhibit the CYP3A4 enzymes might increase levels of lovastatin from red yeast rice.
Read the full Red Yeast Rice + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Abiraterone Acetate interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acebutolol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Red Yeast Rice + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Red Yeast Rice with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Red Yeast Rice
Cyclosporine (Neoral, Sandimmune)
Theoretically, taking red yeast rice in combination with cyclosporine might increase the risk of myopathy.
Red yeast rice contains varying levels of the statin drug lovastatin. Cyclosporine has been reported to increase plasma levels of lovastatin by 5- to 20-fold, resulting in reports of myopathy and rhabdomyolysis.
Cytochrome P450 3A4 (Cyp3A4) Inhibitors
Theoretically, drugs that inhibit the CYP3A4 enzymes might increase levels of lovastatin from red yeast rice.
Red yeast rice contains varying levels of the statin drug lovastatin, which is metabolized by CYP3A4. Combining red yeast rice with CYP3A4 inhibitors might increase serum levels of lovastatin from red yeast rice.
Gemfibrozil (Lopid)
Theoretically, taking red yeast rice in combination with gemfibrozil might increase the risk of rhabdomyolysis.
Red yeast rice contains varying levels of the statin drug lovastatin. Gemfibrozil has been reported to increase the risk of rhabdomyolysis when used in combination with lovastatin.
Hepatotoxic Drugs
Theoretically, concomitant use might increase the risk of liver damage.
Red yeast rice contains varying levels of the drug lovastatin. Lovastatin can cause liver damage in some people. Some clinical research suggests that supplements containing red yeast rice might increase liver enzyme levels in some, but not all, participants. Cases of acute hepatitis have been associated with red yeast rice. Combining it with hepatotoxic drugs might further increase this risk.
Hmg-Coa Reductase Inhibitors ("Statins")
Theoretically, taking red yeast rice with other statins might increase the risk of potential adverse effects.
Red yeast rice contains varying levels of the statin drug lovastatin and might result in supratherapeutic levels when used with other statins. Based on evaluation of data from the US Food and Drug Administration's adverse event reporting system (FAERS), it is recommended that red yeast rice products be avoided in people taking prescription statins.
Niacin
Theoretically, taking red yeast rice in combination with high-dose niacin might increase the risk of rhabdomyolysis.
Red yeast rice contains varying levels of the statin drug lovastatin and has been linked to reports of myopathy. Niacin has been reported to increase the risk of rhabdomyolysis when used in combination with lovastatin.
Brand information
Manufacturer and brand details for Red Yeast Rice, from the product label.
Woodstock Vitamins
See all Woodstock Vitamins products- Name
- Village Vitality LLC
- City
- Woodstock
- State
- NY
- ZipCode
- 12498
- Phone Number
- 1-888-710-0006
- Web Address
- woodstockvitamins.com
Red Yeast Rice by Woodstock Vitamins: Common Questions
Does Red Yeast Rice by Woodstock Vitamins interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What does red yeast rice do?
What are the most common side effects?
Can I take this while pregnant or breastfeeding?
Does the strength vary between brands?
Why do I need to check my medications before taking this?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Red Yeast Rice is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Red Yeast Rice’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Red Yeast Rice's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 50 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Red Yeast Rice 50 references
- Hebel SK, ed. Drug Facts and Comparisons. 52nd ed. St. Louis: Facts and Comparisons, 1998.
- Heber D, Yip I, Ashley JM, et al. Cholesterol-lowering effects of a proprietary Chinese red-yeast-rice dietary supplement. Am J Clin Nutr 1999;69:231-6. PubMed
- Wang J, Lu A, Chi J. Multicenter clinical trial of the serum lipid-lowering effects of a monascus purpureus (red yeast) rice preparation from traditional Chinese medicine. Cur Ther Res 1997;58:964-78. DOI
- Wigger-Alberti W, Bauer A, Hipler UC, Elsner P. Anaphylaxis due to Monascus purpureus-fermented rice (red yeast rice). Allergy 1999;54:1330-1.
- Prasad GV, Wong T, Meliton G, Bhaloo S. Rhabdomyolysis due to red yeast rice (Monascus purpureus) in a renal transplant recipient. Transplantation 2002;74:1200-1. PubMed
- Heber D, Lembertas A, Lu QY, et al. An analysis of nine proprietary Chinese red yeast rice dietary supplements: implications of variability in chemical profile and contents. J Altern Complement Med 2001;7:133-9. PubMed
- Mueller PS. Symptomatic myopathy due to red yeast rice. Ann Intern Med 2006;145:474-5. PubMed
- Roselle H, Ekatan A, Tzeng J, et al. Symptomatic hepatitis associated with the use of herbal red yeast rice. Ann Intern Med 2008;149:516-7. PubMed
- Lapi F, Gallo E, Bernasconi S, et al. Myopathies associated with red yeast rice and liquorice: spontaneous reports from the Italian Surveillance System of Natural Health Products. Br J Clin Pharmacol 2008;66:572-74. PubMed
- Becker DJ, Gordon RY, Halbert SC, et al. Red yeast rice for dyslipidemia in statin-intolerant patients: A randomized trial. Ann Intern Med 2009;150:830-9. PubMed
- Halbert SC, French B, Gordon RY, et al. Tolerability of red yeast rice (2,400 mg twice daily) versus pravastatin (20 mg twice daily) in patients with previous statin intolerance. Am J Cardiol 2010;105:198-204. PubMed
- Gordon RY, Cooperman T, Obermeyer W, Becker DJ. Marked variability of monacolin levels in commercial red yeast rice products: buyer beware! Arch Intern Med 2010;170:1722-7. PubMed
- Karl M, Rubenstein M, Rudnick C, Brejda J. A multicenter study of nutraceutical drinks for cholesterol (evaluating effectiveness and tolerability). J Clin Lipidology 2012;6:150-158. PubMed
- Huang, J., Frohlich, J., and Ignaszewski, A. P. The impact of dietary changes and dietary supplements on lipid profile. Can J Cardiol 2011;27(4):488-505. PubMed
- Grieco, A., Miele, L., Pompili, M., Biolato, M., Vecchio, F. M., Grattagliano, I., and Gasbarrini, G. Acute hepatitis caused by a natural lipid-lowering product: when "alternative" medicine is no "alternative" at all. J Hepatol 2009;50(6):1273-1277. PubMed
- Smith, D. J. and Olive, K. E. Chinese red rice-induced myopathy. South.Med J 2003;96(12):1265-1267. PubMed
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