Cranberry Ingredients & Drug Interactions
by Herbadiet
What is this page for?
First and foremost: checking Cranberry 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 is a dietary supplement by Herbadiet 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 extract powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cranberry by Herbadiet
Ask about any prescription or over-the-counter medication and we check it for interactions with Cranberry by Herbadiet — 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 by Herbadiet
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 extract powder. There are no inactive ingredients listed for this formulation.
Does it work?
Moderate evidence
Cranberry extract is possibly effective for urinary tract infections (UTIs) — that's the use with the strongest evidence behind it. For other conditions like age-related cognitive decline, benign prostatic hyperplasia (enlarged prostate), cancer prevention, fatty liver disease, and chronic fatigue, the evidence isn't established enough to rate it either way.
How safe is it?
Well-documented data
Cranberry is generally well tolerated when taken by mouth, though diarrhea and stomach discomfort are the most common side effects reported in trials. In very large doses (multiple liters of juice daily), it can cause significant gastrointestinal upset, especially in children; even at lower doses (like 16 ounces of juice daily for weeks), nausea, vomiting, and diarrhea have been reported.
Concentrated supplement doses haven't been studied as thoroughly as whole-food cranberry, so talk with your doctor before starting a concentrated extract.
Meds to double-check
Moderate interaction found
Check with your doctor or pharmacist before taking this product if you're on warfarin or other blood thinners, cholesterol medications like atorvastatin, heart or blood pressure drugs (especially nifedipine), or pain relievers like diclofenac. Cranberry may increase how high these medications build up in your bloodstream.
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 extract may help prevent urinary tract infections, but it's not a substitute for treating an active infection. The main concern here is medication interactions, especially if you take blood thinners, cholesterol drugs, or heart medications — those need a conversation with your doctor or pharmacist first.
If stomach upset is a problem for you, this supplement may make it worse.
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 Cranberry, straight from the product label.
| Brand | Herbadiet |
|---|---|
| Net contents | 0 Not Present |
| Market status | On market |
| Date entered into DSLD | Feb 25, 2021 |
| DSLD ID | 244407 |
| Product type | Botanical |
| Supplement form | Powder |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, 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 Cranberry by Herbadiet, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Cranberry extract powder | 500 mg | -- |
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
Healthy Urinary Tract
Free of fillers, binders, artificial ingredients, dairy, soy, wheat, gluten, yeast
V Vegan
Ethically Sourced Scientifically Tested Premium Grade Ingredients
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, take up to 1000mg daily, or as directed by physician.
Precautions
Keep out of reach of children.
Warning: Pregnant or lactating women should consult your physician before use.
Storage
Store in a dry, cool & dark.
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
Batch No. ARK-P101
Formula
Standardized Extract Powder Derived from Vaccinium Oxycoccos Berries
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cranberry by Herbadiet 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 by Herbadiet
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size500 mg Dosage formPowder Amounts shown are per serving.
Cranberry extract powder
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 extract powder monograph & interactionsCranberry by Herbadiet Drug Interactions
HelloPharmacist Interaction Report
Herbadiet Cranberry extract powder interacts with several medication types through its cranberry content, most notably with blood thinners like warfarin.
The most serious documented concern is a case of severe muscle breakdown (rhabdomyolysis), liver damage, and back pain in a patient taking atorvastatin (a cholesterol drug) alongside concentrated cranberry juice — though this is a single case report, not proof the interaction always happens.
Read the full breakdown — every affected drug type, severity by severity
Cranberry may also increase levels of certain heart and blood pressure medications (CYP3A4 substrates like nifedipine), and there's conflicting evidence about its effect on blood thinners and pain relievers like diclofenac. The mechanism appears to be that cranberry can slow how your liver breaks down these drugs, letting them build up in your system.
If you take warfarin, atorvastatin, nifedipine, diclofenac, or other medications metabolized by your liver, check your exact drugs with the search tool on this page before starting this supplement.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cranberry?
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 interact with 712 drugs. Click any drug to see the details.
1 of the 1 ingredient in Cranberry interact with drugs. Each result below shows which ingredient is responsible. Cranberry extract powder
Buproprion, DextromethorphanAuvelity
How Buproprion, Dextromethorphan interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Buproprion, Dextromethorphan interactionBuspironeBuSpar
How Buspirone interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Buspirone interactionBusulfanBusulfex, Myleran
How Busulfan interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Busulfan interactionCabazitaxelCabazitaxel, Jetvana
How Cabazitaxel interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cabazitaxel interactionCabotegravir, RilpivirineCabenuva
How Cabotegravir, Rilpivirine interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cabotegravir, Rilpivirine interactionCabozantinibCometriq
How Cabozantinib interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cabozantinib interactionCabozantinib S-malateCabometyx
How Cabozantinib S-malate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cabozantinib S-malate interactionCaffeine (otc Drug)Molie, Overtime, Vivarin
How Caffeine (otc Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine (otc Drug) interactionCaffeine (prescription Drug)Caffeine, Dextrophin
How Caffeine (prescription Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine (prescription Drug) interactionCaffeine , Sodium BenzoateCaffeine and Sodium Benzoate
How Caffeine , Sodium Benzoate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine , Sodium Benzoate interactionCaffeine, Diphenhydramine, Ergotamine (prescription Drug)Ergodryl
How Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interactionCaffeine, Ergotamine (prescription Drug)Migergot
How Caffeine, Ergotamine (prescription Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine, Ergotamine (prescription Drug) interactionCaffeine, Ergotamine Tartrate (prescription Drug)Cafergot, Wigraine
How Caffeine, Ergotamine Tartrate (prescription Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine, Ergotamine Tartrate (prescription Drug) interactionCaffeine, Potassium Salicylate, SalicylamideTrim-Elim
How Caffeine, Potassium Salicylate, Salicylamide interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Caffeine, Potassium Salicylate, Salicylamide interactionCalcifediolRayaldee
How Calcifediol interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Calcifediol interactionCannabidiol (prescription Drug)Epidiolex
How Cannabidiol (prescription Drug) interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cannabidiol (prescription Drug) interactionCapivasertibTruqap
How Capivasertib interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Capivasertib interactionCapmatinib HydrochlorideTabrecta
How Capmatinib Hydrochloride interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Capmatinib Hydrochloride interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Carbamazepine interactionCarbetapentane Tannate, Chlorpheniramine TannateTussi-12
How Carbetapentane Tannate, Chlorpheniramine Tannate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Carbetapentane Tannate, Chlorpheniramine Tannate interactionCarbetapentane Tannate, Chlorpheniramine Tannate, Ephedrine Tannate, Phenylephrine TannateQuadratuss, Ry Tuss, Rynatuss, Tri Tannate Plus
How Carbetapentane Tannate, Chlorpheniramine Tannate, Ephedrine Tannate, Phenylephrine Tannate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Carbetapentane Tannate, Chlorpheniramine Tannate, Ephedrine Tannate, Phenylephrine Tannate interactionCarbetapentane, Chlorpheniramine, PhenylephrineRicotuss
How Carbetapentane, Chlorpheniramine, Phenylephrine interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Carbetapentane, Chlorpheniramine, Phenylephrine interactionCarbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium GuaiacolsulfonateCophene-X
How Carbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium Guaiacolsulfonate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Carbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium Guaiacolsulfonate interactionCariprazine HydrochlorideVraylar
How Cariprazine Hydrochloride interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cariprazine Hydrochloride interactionCelecoxib, TramadolSeglentis
How Celecoxib, Tramadol interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 2c9 (cyp2c9) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP2C9 substrates.
Read the full Cranberry Extract Powder + Celecoxib, Tramadol interactionCevimelineEvoxac
How Cevimeline interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Cevimeline interactionChlorpheniramineChlor-Trimeton, Teldrin
How Chlorpheniramine interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Chlorpheniramine interactionChlorpheniramine Maleate, Dextromethorphan HydrobromideCoricidin HBP Cough & Cold, Coricidin II Cough & Cold, Pediatric Vicks Formula 44m Cough & Cold Relief
How Chlorpheniramine Maleate, Dextromethorphan Hydrobromide interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Chlorpheniramine Maleate, Dextromethorphan Hydrobromide interactionChlorpheniramine Maleate, Hydrocodone BitartrateVituz
How Chlorpheniramine Maleate, Hydrocodone Bitartrate interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Chlorpheniramine Maleate, Hydrocodone Bitartrate interactionChlorpheniramine Polistirex, Codeine PolistirexTuzistra XR
How Chlorpheniramine Polistirex, Codeine Polistirex interacts with Cranberry — through 1 ingredient. Tap an ingredient for the detail:
Cranberry Extract PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract Powder + Chlorpheniramine Polistirex, Codeine Polistirex interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cranberry 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 extract powder
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, from the product label.
Herbadiet
See all Herbadiet products- Name
- Arkure Health Care
- Street Address
- 11, Sector - 14
- City
- Rohtak
- State
- Haryana
- ZipCode
- 124001
- Web Address
- www.herbadiet.in
Cranberry by Herbadiet: Common Questions
Does Cranberry by Herbadiet interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this help me prevent a urinary tract infection?
What side effects should I expect?
Is it safe to take this while I'm pregnant or breastfeeding?
Does this really work for what it claims?
I take a statin for cholesterol. Can I use this product?
Why does this product interact with so many medications?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cranberry 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’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Cranberry'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 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
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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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