Cranberry 500 mg Ingredients & Drug Interactions
by Windmill
What is this page for?
First and foremost: checking Cranberry 500 mg 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
Cranberry 500 mg is a dietary supplement by Windmill with 1 active ingredient. Its ingredients are commonly taken for urinary tract infection prevention, bladder health, antioxidant support.Based on those ingredients, 712 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Cranberry Fruit Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cranberry 500 mg by Windmill
Ask about any prescription or over-the-counter medication and we check it for interactions with Cranberry 500 mg by Windmill — 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 Cranberry 500 mg by Windmill
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: cranberry fruit extract at 500 mg per capsule. The remaining contents — rice flour, gelatin, magnesium stearate, and silica — are inactive ingredients used to form and stabilize the capsule.
Does it work?
Moderate evidence
Cranberry is rated possibly effective for urinary tract infections (UTIs) based on the evidence we hold. For other conditions listed — age-related cognitive decline, benign prostatic hyperplasia, cancer, fatty liver disease, and chronic fatigue — the evidence is insufficient to rate whether it works.
How safe is it?
Well-documented data
Cranberry is rated likely safe during pregnancy and lactation. As a food or supplement in normal amounts, it's generally well tolerated.
The most common side effects are diarrhea and gastrointestinal discomfort, especially at higher doses — very large amounts (3–4 liters of juice daily) can cause stomach upset and diarrhea, particularly in young children. Nausea, vomiting, and skin redness have been reported in a small number of cases.
Concentrated supplement doses haven't been studied as thoroughly as food amounts, so it's wise to check with your provider before starting, especially if you have a sensitive stomach.
Meds to double-check
Moderate interaction found
Before taking this product, check whether you're on a statin (like atorvastatin), a blood thinner (like warfarin), or a calcium channel blocker (like nifedipine) — cranberry moderately interacts with these and may change how they work. Also double-check any other regular medications with the tool below, since cranberry affects how your liver clears many drugs.
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.
Cranberry may help with UTI prevention, and it's generally easy on the stomach at normal doses. If you take a statin, blood thinner, or blood-pressure medication — or any regular prescription — run it through the interaction checker below before you start.
Talk to your pharmacist if you're concerned about stomach upset or have questions about your specific medications.
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 21, 2025.
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 Cranberry 500 mg, straight from the product label.
| Brand | Windmill |
|---|---|
| Barcode (UPC) | 035046003425 |
| Net contents | 30 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 21, 2025 |
| DSLD ID | 333544 |
| 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, Sugar 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 Cranberry 500 mg by Windmill, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Cranberry Fruit Extract | 500 mg | -- |
Other ingredients: Rice Flour, Gelatin, 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.
Suggested/Recommended/Usage/Directions
Directions: Take 1 capsule daily as a dietary supplement or as directed by a healthcare professional.
Precautions
Keep out of reach of children.
Do not purchase if seal is broken.
Storage
Protect from heat, light & moisture. Store in a cool, dry place.
Seals/Symbols
Made in the U.S.A. from globally sourced ingredients.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Brand IP Statement(s)
Windmill Family owned since 1972
Formulation
Blueprint traditional herbals Antioxidant Healthy urinary tract
No sugar, wheat, soy, milk, artificial colors, flavors or preservatives Non GMO - Gluten free
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cranberry 500 mg by Windmill 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 Cranberry 500 mg by Windmill
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 container30 Amounts shown are per serving.
Cranberry Fruit Extract
Interacts with712 drugs
Cranberry is best known for helping to prevent repeated urinary tract infections (UTIs) in some people, and the evidence here is moderate but mixed. I...
Cranberry Fruit Extract monograph & interactionsOther (inactive) ingredients: Rice Flour, Gelatin, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
Cranberry 500 mg by Windmill Drug Interactions
HelloPharmacist Interaction Report
Windmill's Cranberry 500 mg contains a single active ingredient — cranberry fruit extract — that interacts with a number of medications.
The most serious concern is with cholesterol-lowering statins like atorvastatin (Lipitor). Cranberry can theoretically slow how your body clears these drugs, raising their levels and risk of side effects; one case report documented severe muscle breakdown (rhabdomyolysis), back pain, and liver problems in a patient taking atorvastatin with large amounts of cranberry juice daily for two weeks.
Read the full breakdown — every affected drug type, severity by severity
Cranberry also moderately interacts with blood thinners (warfarin/Coumadin) — it may boost their effect and increase bleeding risk, though the evidence is mixed — and with calcium channel blockers used for high blood pressure (like nifedipine/Procardia), which it can slow in the body. Minor interactions are documented with other blood-pressure drugs and pain relievers like diclofenac (Voltaren), though the real-world effect of the supplement form is less clear than with juice.
Additionally, cramberry may affect other medications your liver breaks down via the CYP3A4 and CYP2C9 pathways. Altogether, these interactions span 702 individual medications.
Check your exact prescriptions with the interaction search tool on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cranberry 500 mg?
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 Cranberry 500 mg interact with 712 drugs. Click any drug to see the details.
1 of the 1 ingredient in Cranberry 500 mg interact with drugs. Each result below shows which ingredient is responsible. Cranberry Fruit Extract
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Ado-trastuzumab Emtansine interactionAbemaciclibVerzenio
How Abemaciclib interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Abiraterone Acetate interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acalabrutinib interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + 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 Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Cranberry 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Fruit ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Fruit Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cranberry 500 mg 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.
Cranberry Fruit Extract
Atorvastatin (Lipitor)
Theoretically, cranberry might increase levels and adverse effects of atorvastatin.
In one case report, a patient taking atorvastatin experienced upper back pain, rhabdomyolysis, and abnormal liver function after drinking cranberry juice 16 ounces daily for 2 weeks. Theoretically, this may have been caused by inhibition of cytochrome P450 3A4 (CYP3A4) enzymes by cranberry juice, as atorvastatin is a CYP3A4 substrate. Creatinine kinase and liver enzymes normalized within 2 weeks of stopping cranberry juice. Patients taking atorvastatin should avoid large quantities of cranberry juice.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
A case of upper back pain, rhabdomyolysis, and abnormal liver function has been reported for a patient taking atorvastatin, a CYP3A4 substrate, in combination with cranberry juice 16 ounces daily for 2 weeks. Creatinine kinase and liver enzymes normalized within 2 weeks of stopping cranberry juice. Also, animal research suggests that cranberry juice, administered intraduodenally 30 minutes prior to nifedipine, a CYP3A4 substrate, inhibits nifedipine metabolism and increases the area under the concentration-time curve by 1.6-fold compared to control.
Nifedipine (Procardia)
Theoretically, cranberry might increase the levels and adverse effects of nifedipine.
Animal research suggests that cranberry juice, administered intraduodenally 30 minutes prior to nifedipine treatment, inhibits nifedipine metabolism and increases the area under the concentration-time curve by 1.6-fold compared to control. This interaction has not been reported in humans.
Warfarin (Coumadin)
Theoretically, cranberry might increase the levels and adverse effects of warfarin. However, research is conflicting.
There is contradictory evidence about the effect of cranberry juice on warfarin. Case reports have linked cranberry juice consumption to increases in the international normalized ratio (INR) in patients taking warfarin, resulting in severe spontaneous bleeding and excessive postoperative bleeding. Daily consumption of cranberry sauce for one week has also been linked to an increase in INR in one case report. In a small study in healthy young males, taking a high dose of 3 grams of cranberry juice concentrate capsules, equivalent to 57 grams of fruit daily, for 2 weeks produced a 30% increase in the area under the INR-time curve after a single 25-mg dose of warfarin. However, 3 very small clinical studies in patients stabilized on warfarin reported that cranberry juice 250 mL once or twice daily for 7 days (27% cranberry juice or pure cranberry juice) or 240 mL once daily for 14 days does not significantly increase INR or affect plasma warfarin levels. The reasons for these discrepant findings are unclear. It is possible that the form and dose of cranberry may play a role, as cranberry extracts and juices contain different constituents. Additionally, an in vitro study evaluating 5 different cranberry juices found varying effects, with only a cranberry concentrate, and not diluted cranberry juices, inhibiting CYP2C9. However, this concentrate did not inhibit CYP2C9 activity in humans.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, cranberry might increase the levels and adverse effects of CYP2C9 substrates. However, research is conflicting.
There is contradictory evidence about the effect of cranberry on CYP2C9 enzymes. In vitro evidence suggests that flavonoids in cranberry inhibit CYP2C9 enzymes. However, clinical research shows that cranberry juice does not significantly affect the levels, metabolism, or elimination of the CYP2C9 substrates flurbiprofen or diclofenac. Also, in patients stabilized on warfarin, drinking cranberry juice 250 mL daily for 7 days does not significantly increase the anticoagulant activity of warfarin, a CYP2C9 substrate. Additional pharmacokinetic research shows that cranberry juice does not increase peak plasma concentrations or area under the concentration-time curve of warfarin.
Diclofenac (Voltaren, Others)
Theoretically, cranberry might modestly increase the levels and adverse effects of diclofenac.
In vitro evidence suggests that cranberry juice inhibits diclofenac metabolism by human liver microsomes. However, drinking cranberry juice does not seem to affect diclofenac metabolism in humans.
Brand information
Manufacturer and brand details for Cranberry 500 mg, from the product label.
Windmill
- Name
- Windmill Health Products
- Street Address
- 10 Henderson Drive
- City
- West Caldwell
- State
- NJ
- ZipCode
- 07006
- Web Address
- windmillvitamins.com
Cranberry 500 mg by Windmill: Common Questions
Does Cranberry 500 mg by Windmill interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does cranberry actually prevent urinary tract infections?
Will this give me an upset stomach?
Is it safe to take while pregnant or breastfeeding?
What's the difference between this supplement and cranberry juice?
Can I take this with my statin or blood thinner?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cranberry 500 mg 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 Cranberry 500 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Cranberry 500 mg'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.
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The 33 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.
Cranberry 33 references
- Anon. Possible interaction between warfarin and cranberry juice. Current Problems in Pharmacovigilance 2003;29:8. PubMed
- Greenblatt DJ, von Moltke LL, Perloff ES, et al. Interaction of flurbiprofen with cranberry juice, grape juice, tea, and fluconazole: in vitro and clinical studies. Clin Pharmacol Ther 2006;79:125-33. PubMed
- Hodek P, Trefil P, Stiborova M. Flavonoids-potent and versatile biologically active compounds interacting with cytochromes P450. Chem Biol Interact 2002;139:1-21.. PubMed
- Grant P. Warfarin and cranberry juice: An interaction? J Heart Valve Dis 2004;13:25-6.
- Suvarna R, Pirmohamed M, Henderson L. Possible interaction between warfarin and cranberry juice. BMJ 2003;327:1454. PubMed
- Li Z, Seeram NP, Carpenter CL, et al. Cranberry does not affect prothrombin time in male subjects on warfarin. J Am Diet Assoc 2006;106:2057-61. PubMed
- Lilja JJ, Backman JT, Neuvonen PJ. Effects of daily ingestion of cranberry juice on the pharmacokinetics of warfarin, tizanidine, and midazolam - probes of CYP2C9, CYP1A2 and CYP3A4. Clin Pharmacol The 2007:81:833-9. PubMed
- Wing DA, Rumney PJ, Preslicka CW, Chung JH. Daily cranberry juice for the prevention of asymptomatic bacteriuria in pregnancy: a randomized, controlled pilot study. J Urol 2008;180:1367-72. PubMed
- Mohammed Abdul MI, Jiang X, Williams KM, et al. Pharmacodynamic interaction of warfarin with cranberry but not with garlic in healthy subjects. Br J Pharmacol 2008;154:1691-700. PubMed
- McMurdo MET, Argo I, Phillips G, et al. Cranberry or trimethoprim for the prevention of recurrently urinary tract infections? A randomized controlled trial in older women. J Antimicrob Chemother 2009;63:389-95.
- Mergenhagen KA, Sherman O. Elevated International Normalized Ratio after concurrent ingestion of cranberry sauce and warfarin. Am J Health-Syst Pharm 2008;65:2113-6. PubMed
- Ansell J, McDonough M, Zhao Y, et al. The absence of an interaction between warfarin and cranberry juice: a randomized, double-blind trial. J Clin Pharmacol 2009;49:824-30. PubMed
- Haber SL, Cauthon KA, Raney EC. Cranberry and warfarin interaction: a case report and review of the literature. Consult Pharm 2012;27:58-65. PubMed
- Hamann GL, Campbell JD, George CM. Warfarin-cranberry juice interaction. Ann Pharmacother 2011;45:e17. PubMed
- Roberts D, Flanagan P. Case report: Cranberry juice and warfarin. Home Healthc Nurse 2011;29:92-7.
- Garcia-Calatayud, S., Larreina Cordoba, J. J., and Lozano De La Torre MJ. [Severe cranberry juice poisoning]. An.Esp.Pediatr. 2002;56(1):72-73.
- Patel, D. A., Gillespie, B., Sobel, J. D., Leaman, D., Nyirjesy, P., Weitz, M. V., and Foxman, B. Risk factors for recurrent vulvovaginal candidiasis in women receiving maintenance antifungal therapy: results of a prospective cohort study. Am J Obstet.Gy PubMed
- Isele, H. [Fatal bleeding under warfarin plus cranberry juice. Is it due to salicylic acid?]. MMW.Fortschr.Med 3-11-2004;146(11):13.
- Linsenmeyer, T. A., Harrison, B., Oakley, A., Kirshblum, S., Stock, J. A., and Millis, S. R. Evaluation of cranberry supplement for reduction of urinary tract infections in individuals with neurogenic bladders secondary to spinal cord injury. A prospecti
- McMurdo, M. E., Bissett, L. Y., Price, R. J., Phillips, G., and Crombie, I. K. Does ingestion of cranberry juice reduce symptomatic urinary tract infections in older people in hospital? A double-blind, placebo-controlled trial. Age Ageing 2005;34(3):256- PubMed
- Sylvan, L. and Justice, N. P. Possible interaction between warfarin and cranberry juice. Am Fam.Physician 9-15-2005;72(6):1000.
- Niklasson, A. and Andren, L. [Interaction between Waran and cranberry juice]. Lakartidningen 3-15-2006;103(11):853-854.
- Rindone, J. P. and Murphy, T. W. Warfarin-cranberry juice interaction resulting in profound hypoprothrombinemia and bleeding. Am J Ther 2006;13(3):283-284. PubMed
- Uesawa, Y. and Mohri, K. Effects of cranberry juice on nifedipine pharmacokinetics in rats. J Pharm Pharmacol 2006;58(8):1067-1072. PubMed
- Valentova, K., Stejskal, D., Bednar, P., Vostalova, J., Cihalik, C., Vecerova, R., Koukalova, D., Kolar, M., Reichenbach, R., Sknouril, L., Ulrichova, J., and Simanek, V. Biosafety, antioxidant status, and metabolites in urine after consumption of dried
- Royer, D. J., George, J. N., and Terrell, D. R. Thrombocytopenia as an adverse effect of complementary and alternative medicines, herbal remedies, nutritional supplements, foods, and beverages. Eur J Haematol 2010;84(5):421-429. PubMed
- Stapleton, A. E., Dziura, J., Hooton, T. M., Cox, M. E., Yarova-Yarovaya, Y., Chen, S., and Gupta, K. Recurrent urinary tract infection and urinary Escherichia coli in women ingesting cranberry juice daily: a randomized controlled trial. Mayo.Clin.Proc. PubMed
- Doad GJ, Kabange W. Cranberry juice, atorvastatin and back pain. J Med Assoc Ga 2014;103(1):14.
- Griffiths AP, Beddall A, Pegler S. Fatal haemopericardium and gastrointestinal haemorrhage due to possible interaction of cranberry juice with warfarin. J R Soc Promot Health 2008;128(6):324-6. PubMed
- Mellen CK, Ford M, Rindone JP. Effect of high-dose cranberry juice on the pharmacodynamics of warfarin in patients. Br J Clin Pharmacol 2010;70(1):139-42. PubMed
- Ushijima K, Tsuruoka S, Tsuda H, Hasegawa G, Obi Y, Kaneda T, Takahashi M, Maekawa T, Sasaki T, Koshimizu TA, Fujimura A. Cranberry juice suppressed the diclofenac metabolism by human liver microsomes, but not in healthy human subjects. Br J Clin Pharmaco PubMed
- Ngo N, Brantley SJ, Carrizosa DR, et al. The warfarin-cranberry juice interaction revisited: A systematic in vitro-in vivo evaluation. J Exp Pharmacol. 2010;2010(2):83-91.
- Williams G, Stothart CI, Hahn D, Stephens JH, Craig JC, Hodson EM. Cranberries for preventing urinary tract infections. Cochrane Database Syst Rev 2023;11(11):CD001321. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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