Beni Koji RYR Red Yeast Rice Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Beni Koji RYR 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
Beni Koji RYR Red Yeast Rice is a dietary supplement by Douglas Laboratories 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 organic Red Yeast Rice. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Beni Koji RYR Red Yeast Rice by Douglas Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Beni Koji RYR Red Yeast Rice by Douglas Laboratories — 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 Beni Koji RYR Red Yeast Rice by Douglas Laboratories
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: organic red yeast rice. Red yeast rice is a fermented grain product that naturally contains lovastatin, a compound that works like a statin drug to help manage cholesterol.
The capsule itself is made from gelatin, microcrystalline cellulose, and vegetable stearate—inactive ingredients that give the supplement its form.
Does it work?
Moderate evidence
In the data we hold, red yeast rice is rated possibly effective for high cholesterol in people with HIV/AIDS (HIV/AIDS-related dyslipidemia) and possibly effective for reducing the risk of heart attack (myocardial infarction). These ratings mean there's some supportive evidence, but more research is needed to be certain.
If you're taking this for general cholesterol management outside those specific populations, the evidence we have doesn't establish effectiveness.
How safe is it?
Well-documented data
Red yeast rice is generally well tolerated, but because it acts like a statin, it carries similar risks. The most common side effects are abdominal discomfort, diarrhea, dizziness, flatulence, headache, heartburn, and nausea.
Rarely, people have reported serious effects: muscle breakdown (rhabdomyolysis), liver damage (hepatotoxicity), and nerve damage (peripheral neuropathy). Product quality varies widely, and contaminated batches have caused kidney damage.
Red yeast rice is rated likely unsafe during pregnancy because of its statin-like effects and lack of safety data in pregnancy. Safety data during breastfeeding is not on file, so talk with your pharmacist or doctor if you're nursing or planning to nurse.
Meds to double-check
Moderate interaction found
Before you take this, double-check with your pharmacist if you're on cyclosporine (major immunosuppressant risk), other statins or cholesterol drugs, gemfibrozil, high-dose niacin, CYP3A4 inhibitors (some antifungals, antibiotics, HIV drugs), or any medication that can damage the liver. All of these carry Moderate-severity interactions with the lovastatin in red yeast rice.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Red yeast rice may help with cholesterol in specific populations, but it's not a simple dietary supplement—it contains a real drug and carries real drug risks. If you take any prescription medication, especially statins, heart or immune drugs, or anything for cholesterol or liver health, check your medications with our tool first.
Avoid this product during pregnancy. Talk to your pharmacist before starting.
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 Feb 25, 2021.
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 Beni Koji RYR Red Yeast Rice, straight from the product label.
| Brand | Douglas Laboratories |
|---|---|
| Barcode (UPC) | 310539013694 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 25, 2021 |
| DSLD ID | 244602 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten 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 Beni Koji RYR Red Yeast Rice by Douglas Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| organic Red Yeast Rice | 1000 mg | -- |
Other ingredients: Gelatin, Microcrystalline Cellulose, Vegetable Stearate
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.
Suggested/Recommended/Usage/Directions
Suggested Usage: As a dietary supplement, adults take 2 capsules twice daily or as directed by your health professional.
Precautions
Warning: Not to be taken by pregnant or lactating women.
Do not take this product if you have a liver condition or have elevated liver enzymes.
If you are taking any medication, consult your health professional before use.
Keep out of the reach of children.
Use only if safety seal is intact.
Storage
Store in a cool, dry place.
Formulation
Gluten-free, Non-GMO
Healthy lipid metabolism
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
General Statements
Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity. Scan to learn about our manufacturing excellence
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Beni Koji RYR Red Yeast Rice by Douglas Laboratories 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 Beni Koji RYR Red Yeast Rice by Douglas Laboratories
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Organic 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...
Organic Red Yeast Rice monograph & interactionsOther (inactive) ingredients: Gelatin, Microcrystalline Cellulose, Vegetable Stearate. These complete the product’s ingredient list but are not active constituents.
Beni Koji RYR Red Yeast Rice by Douglas Laboratories Drug Interactions
HelloPharmacist Interaction Report
Beni Koji RYR Red Yeast Rice by Douglas Laboratories contains organic red yeast rice, which has a natural statin compound (lovastatin) in it.
Because of that lovastatin content, this product interacts with a number of medications, and the interactions carry real risks.
Read the full breakdown — every affected drug type, severity by severity
The most serious concern is combining this with cyclosporine (an immunosuppressant), which can raise lovastatin levels dramatically—up to 20-fold higher—and create a dangerous risk of muscle breakdown (myopathy and rhabdomyolysis). Similarly, gemfibrozil (a cholesterol drug) and high-dose niacin both increase the risk of rhabdomyolysis when paired with red yeast rice.
Other statins (blood cholesterol drugs like atorvastatin, simvastatin, or pravastatin) should not be taken with this product because combining them could push lovastatin to unsafe levels. Drugs that slow down how your liver metabolizes lovastatin—called CYP3A4 inhibitors, a category that includes some antifungals, antibiotics, and HIV medications—might raise lovastatin levels and boost the risk of side effects.
Finally, medications that can damage the liver (hepatotoxic drugs) pose a theoretical added risk when combined with red yeast rice.
Altogether, these interactions span 459 individual medications. Use the interaction checker on this page to look up your exact prescriptions before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Beni Koji RYR 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 Beni Koji RYR Red Yeast Rice interact with 477 drugs. Click any drug to see the details.
1 of the 1 ingredient in Beni Koji RYR Red Yeast Rice interact with drugs. Each result below shows which ingredient is responsible. organic Red Yeast Rice
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + 6-mercaptopurine interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Abacavir, Lamivudine interactionAbametapirXeglyze
How Abametapir interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic 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 Organic Red Yeast Rice + Abametapir interactionAbiraterone
How Abiraterone interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic 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 Organic Red Yeast Rice + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Abiraterone Acetate interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acebutolol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic 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 Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic 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 Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic 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 Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic 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 Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Beni Koji RYR Red Yeast Rice — through 1 ingredient. Tap an ingredient for the detail:
Organic Red Yeast RiceHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, concomitant use might increase the risk of liver damage.
Read the full Organic Red Yeast Rice + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Beni Koji RYR 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.
organic 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 Beni Koji RYR Red Yeast Rice, from the product label.
Douglas Laboratories
See all Douglas Laboratories products- Name
- Douglas Laboratories
- Street Address
- 600 Boyce Road
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15205
- Phone Number
- 1.800.245.4440
- Web Address
- www.douglaslabs.com
Beni Koji RYR Red Yeast Rice by Douglas Laboratories: Common Questions
Does Beni Koji RYR Red Yeast Rice by Douglas Laboratories interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is this safe to take while I'm pregnant?
What are the most common side effects?
Can I take this if I'm already on a statin for cholesterol?
What does red yeast rice actually do?
Why does product quality matter for this supplement?
Is this safe if I'm breastfeeding?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Beni Koji RYR 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 Beni Koji RYR 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
Beni Koji RYR 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
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