Cranberry Extract Ingredients & Drug Interactions
by Herbadiet
What is this page for?
First and foremost: checking Cranberry Extract 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 Extract 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, 714 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Cranberry extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cranberry Extract by Herbadiet
Ask about any prescription or over-the-counter medication and we check it for interactions with Cranberry Extract 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 Extract 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
Herbadiet Cranberry Extract is a single-ingredient supplement: cranberry extract in a vegetable cellulose capsule. That's it — no added fillers or binders beyond the capsule material itself.
Does it work?
Moderate evidence
The evidence best supports cranberry for urinary tract infection (UTI) prevention — it's rated possibly effective for that use. For other conditions in our data, including cognitive decline, prostate health, cancer prevention, fatty liver disease, and chronic fatigue, the evidence isn't strong enough to rate either way.
How safe is it?
Well-documented data
Cranberry extract is generally well tolerated. The most common side effects are mild — diarrhea and stomach discomfort — and skin redness or itching has been reported rarely.
That said, concentrated supplement doses haven't been studied as much as whole cranberry in food amounts, so talk with your doctor or pharmacist before starting this product. During pregnancy and lactation, cranberry is rated likely safe.
Remember, though, this supplement is not a replacement for medical treatment of an actual infection — if you have a UTI or other illness, see your doctor.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist if you take a statin like atorvastatin (Lipitor), a blood thinner like warfarin (Coumadin), a heart medication like nifedipine (Procardia), or an anti-inflammatory drug like diclofenac (Voltaren). Cranberry may raise the levels and side effects of these medications.
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.
If you're looking to support urinary tract health, cranberry extract has decent evidence behind it and is usually easy on your stomach. But you must check your medications first, especially if you take a statin, blood thinner, or heart drug — cranberry can change how your body processes these.
Talk to your pharmacist before you start.
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 Nov 19, 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 Extract, straight from the product label.
| Brand | Herbadiet |
|---|---|
| Barcode (UPC) | 880314176666 |
| Net contents | 60 V-Cap(s) |
| Market status | On market |
| Date entered into DSLD | Nov 19, 2021 |
| DSLD ID | 257485 |
| Product type | Botanical |
| Supplement form | Capsule |
| 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 Extract by Herbadiet, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Cranberry extract | 800 mg | -- |
Other ingredients: Vegetable Cellulose Shell
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.
Formula
Herbadiet Cranberry is a high potency 25:1 concentrated extract. This full spectrum extract retains all the active constituents in nature intended balanced ratio. Encapsulating this goodness in our quick release, easy to swallow vegan capsules, guarantees you a premium quality nutritional supplement.
Formulation
Supports immune health Promotes urinary tract health Supports liver health
Natural color variation may occur in this product
100% natural Healthy urinary tract
Non-GMO
Suitable for vegetarians and vegans
Free Of preservatives, binders, gluten, artificial ingredients, dairy, soy, wheat, yeast
Every batch 3rd party lab tested
FDA Disclaimer Statement
These statements have not been evaluated by FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
Precautions
Do not use if seal under the cap is broken or missing. Dietary supplement shouldn't be used as a substitute for a varied diet
Caution: If you are pregnant, breast feeding, or taking medications, consult your doctor before use.
Discontinue use and consult your doctor if any adverse reactions occur.
Keep out of reach of children.
Not for medicinal use
Storage
Store in cool, dry place
Seals/Symbols
fssai Lic. No.: 20817018000147 Vcaps Plus GMP Good Manufacturing Practice Quality Product
General Statements
1% for the planet
License Number: 10018064001315
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions for Use: Take 2 capsules daily, preferably with meals or as directed by your physician. Best when taken early in a day
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cranberry Extract 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 Extract by Herbadiet
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.
Cranberry extract
Interacts with714 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 monograph & interactionsOther (inactive) ingredients: Vegetable Cellulose Shell. These complete the product’s ingredient list but are not active constituents.
Cranberry Extract by Herbadiet Drug Interactions
HelloPharmacist Interaction Report
Herbadiet Cranberry Extract contains cranberry extract, which interacts with a number of medications.
The most serious concern is with cholesterol-lowering statins like atorvastatin (Lipitor), where cranberry may slow how your body clears the drug and raise its levels. One patient taking atorvastatin with high-dose cranberry juice developed muscle breakdown (rhabdomyolysis), back pain, and liver problems that improved when the cranberry stopped.
Read the full breakdown — every affected drug type, severity by severity
Cranberry also has Moderate interactions with blood thinners (warfarin/Coumadin) — it may increase the thinning effect and raise your bleeding risk — and with the heart medication nifedipine (Procardia), which cranberry can cause to build up in your system. Additionally, Minor interactions are documented with anti-inflammatory drugs like diclofenac (Voltaren) and with other medications broken down by the liver enzyme CYP2C9, though human evidence here is mixed.
Altogether, these interactions span 702 individual medications. Before you start this supplement, run your exact medications through the checker on this page — especially if you take a statin, blood thinner, or heart medication.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cranberry Extract?
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 Extract interact with 714 drugs. Click any drug to see the details.
1 of the 1 ingredient in Cranberry Extract interact with drugs. Each result below shows which ingredient is responsible. Cranberry extract
Buprenorphine/naloxoneSuboxone
How Buprenorphine/naloxone interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Buprenorphine/naloxone interactionBuproprion, DextromethorphanAuvelity
How Buproprion, Dextromethorphan interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Buproprion, Dextromethorphan interactionBuspironeBuSpar
How Buspirone interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Buspirone interactionBusulfanBusulfex, Myleran
How Busulfan interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Busulfan interactionCabazitaxelCabazitaxel, Jetvana
How Cabazitaxel interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cabazitaxel interactionCabotegravir, RilpivirineCabenuva
How Cabotegravir, Rilpivirine interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cabotegravir, Rilpivirine interactionCabozantinibCometriq
How Cabozantinib interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cabozantinib interactionCabozantinib S-malateCabometyx
How Cabozantinib S-malate interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cabozantinib S-malate interactionCaffeine (otc Drug)Molie, Overtime, Vivarin
How Caffeine (otc Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine (otc Drug) interactionCaffeine (prescription Drug)Caffeine, Dextrophin
How Caffeine (prescription Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine (prescription Drug) interactionCaffeine , Sodium BenzoateCaffeine and Sodium Benzoate
How Caffeine , Sodium Benzoate interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine , Sodium Benzoate interactionCaffeine, Diphenhydramine, Ergotamine (prescription Drug)Ergodryl
How Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interactionCaffeine, Ergotamine (prescription Drug)Migergot
How Caffeine, Ergotamine (prescription Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine, Ergotamine (prescription Drug) interactionCaffeine, Ergotamine Tartrate (prescription Drug)Cafergot, Wigraine
How Caffeine, Ergotamine Tartrate (prescription Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine, Ergotamine Tartrate (prescription Drug) interactionCaffeine, Potassium Salicylate, SalicylamideTrim-Elim
How Caffeine, Potassium Salicylate, Salicylamide interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Caffeine, Potassium Salicylate, Salicylamide interactionCalcifediolRayaldee
How Calcifediol interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Calcifediol interactionCannabidiol (prescription Drug)Epidiolex
How Cannabidiol (prescription Drug) interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cannabidiol (prescription Drug) interactionCapivasertibTruqap
How Capivasertib interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Capivasertib interactionCapmatinib HydrochlorideTabrecta
How Capmatinib Hydrochloride interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Capmatinib Hydrochloride interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Carbamazepine interactionCarbetapentane Tannate, Chlorpheniramine TannateTussi-12
How Carbetapentane Tannate, Chlorpheniramine Tannate interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + 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 Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Carbetapentane Tannate, Chlorpheniramine Tannate, Ephedrine Tannate, Phenylephrine Tannate interactionCarbetapentane, Chlorpheniramine, PhenylephrineRicotuss
How Carbetapentane, Chlorpheniramine, Phenylephrine interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Carbetapentane, Chlorpheniramine, Phenylephrine interactionCarbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium GuaiacolsulfonateCophene-X
How Carbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium Guaiacolsulfonate interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Carbetapentane, Chlorpheniramine, Phenylephrine, Phenylpropanolamine, Potassium Guaiacolsulfonate interactionCariprazine HydrochlorideVraylar
How Cariprazine Hydrochloride interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cariprazine Hydrochloride interactionCelecoxib, TramadolSeglentis
How Celecoxib, Tramadol interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome 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 + Celecoxib, Tramadol interactionCevimelineEvoxac
How Cevimeline interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Cevimeline interactionChlorpheniramineChlor-Trimeton, Teldrin
How Chlorpheniramine interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + 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 Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Chlorpheniramine Maleate, Dextromethorphan Hydrobromide interactionChlorpheniramine Maleate, Hydrocodone BitartrateVituz
How Chlorpheniramine Maleate, Hydrocodone Bitartrate interacts with Cranberry Extract — through 1 ingredient. Tap an ingredient for the detail:
Cranberry ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry Extract + Chlorpheniramine Maleate, Hydrocodone Bitartrate interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cranberry Extract 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
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 Extract, from the product label.
Herbadiet
See all Herbadiet products- Name
- Arkure Health Care
- City
- Haryana
- State
- India
- Web Address
- www.herbadiet.in
Cranberry Extract by Herbadiet: Common Questions
Does Cranberry Extract by Herbadiet interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this actually help with a urinary tract infection?
What side effects should I expect?
Is this safe during pregnancy or while breastfeeding?
Can I take this if I'm on other medications?
Is this supplement all cranberry, or does it have fillers?
Can I use this instead of going to the doctor for a UTI?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cranberry Extract 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 Extract’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Cranberry Extract'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.
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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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