Cranberry Fruit Ingredients & Drug Interactions
by GNC
What is this page for?
First and foremost: checking Cranberry Fruit 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 Fruit is a dietary supplement by GNC 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, Powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Cranberry Fruit by GNC
Ask about any prescription or over-the-counter medication and we check it for interactions with Cranberry Fruit by GNC — 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 Fruit by GNC
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 powder. Cranberry has a long history as a food and folk remedy, and this capsule delivers the fruit in concentrated form.
The remaining ingredients are inactive — gelatin capsule shell, stearic acid, corn starch, magnesium stearate, dicalcium phosphate, cellulose, and silicon dioxide — they're fillers and binders that help form and preserve the capsule.
Does it work?
Moderate evidence
Cranberry is possibly effective for urinary tract infections (UTIs) — that's the use with the strongest evidence. For other uses listed here — age-related cognitive decline, benign prostatic hyperplasia (enlarged prostate), cancer prevention, fatty liver disease, and chronic fatigue — the evidence isn't established in our data.
If you're considering this for a UTI, talk with your doctor about whether it makes sense for you.
How safe is it?
Well-documented data
Cranberry is generally well tolerated when taken by mouth. The most common side effects are diarrhea and stomach upset.
In clinical trials, some people reported nausea, vomiting, and abdominal discomfort, especially at higher doses. Very large amounts — several liters of juice daily — can cause significant gastrointestinal distress, particularly in young children.
Because concentrated supplement doses haven't been well studied, ask your provider before starting this product.
Meds to double-check
Moderate interaction found
Before taking this product, double-check these medication types with your pharmacist: blood thinners like warfarin (moderate risk), cholesterol-lowering statins especially atorvastatin (moderate risk), blood pressure medication nifedipine (moderate risk), and any other drug your liver processes as a CYP3A4 substrate (moderate risk). Also mention any CYP2C9 substrates or diclofenac you take (minor risk).
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.
GNC Cranberry Fruit may help with urinary tract infections, but it's important to know it interacts with blood thinners, cholesterol drugs, and blood pressure medications. If you take any prescription drugs — especially warfarin, a statin, or nifedipine — check with your pharmacist before adding this supplement.
Cranberry is generally well tolerated, but gastrointestinal upset is common.
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 Fruit, straight from the product label.
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 Fruit by GNC, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Cranberry, Powder | 500 mg | -- |
Other ingredients: Gelatin, Stearic Acid, Corn Starch, Magnesium Stearate, Dicalcium Phosphate, Cellulose, Silicon Dioxide
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
Designed especially for women, our Women's Ultra Mega® Live Well Vitapak features 100% RDA or more of 17 essential vitamins and minerals plus omega-3 fatty acids, biotin, collagen and cranberry for head-to-toe support.
URINARY Includes cranberry fruit to help you maintain a healthy urinary tract
Combines a clinically studied multivitamin blend, omega-3s, calcium, biotin, collagen and cranberry In a randomized, double-blind, placebo-controlled study of 112 healthy volunteers, subjects taking the GNC vitamin and mineral blends for six weeks experienced significant improvements in serum levels of certain key nutrients compared to a placebo and a basic multivitamin formula based upon multivariate statistical analyses of a group of B vitamins (thiamin, niacin, riboflavin, pantothenic acid, biotin, folic acid and vitamins B-6 and B-12) and key antioxidants and carotenoids (a group of beta-carotene, alpha-tocopherol, selenium, lutein and lycopene). Statistically significant improvements in SF-36 Vitality and Mental Health scores were also observed compared to placebo.
Each pack contains: Cranberry Fruit
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.
FDA Statement of Identity
Dietary Supplement
Formulation
Provides women with head-to-toe nutritional support
Our Quality Commitment to You Since 1935, our mission as the industry leader has been to provide you with the highest-quality nutritional supplements. We continue to stand behind this mission. If you're not 100% satisfied with your purchase, return the unused portion of the product with your receipt within 30 days and we'll either refund your money or find you a replacement product that is right for you.
Material verified by TLC.
Conforms to USP <2091> for weight. Meets USP <2040> disintegration.
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, take contents of one packet daily with food. For maximum benefits, take as directed every day.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Cranberry Fruit by GNC 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 Fruit by GNC
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Red Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Cranberry, 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, Powder monograph & interactionsOther (inactive) ingredients: Gelatin, Stearic Acid, Corn Starch, Magnesium Stearate, Dicalcium Phosphate, Cellulose, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
Cranberry Fruit by GNC Drug Interactions
HelloPharmacist Interaction Report
GNC Cranberry Fruit contains cranberry powder, which has documented interactions with several medication types.
The most serious is with blood thinners like warfarin (Coumadin) — cranberry may increase the drug's effects and raise your bleeding risk, though the research is conflicting. It can also raise levels of cholesterol-lowering statins like atorvastatin (Lipitor), which in one case led to muscle breakdown and liver problems.
Blood pressure medication nifedipine (Procardia) may also have increased levels when combined with cranberry.
Read the full breakdown — every affected drug type, severity by severity
Cranberry can theoretically raise levels of other CYP3A4 substrates (a class of drugs your liver processes a certain way) and cause more side effects. It may also modestly affect diclofenac (Voltaren), an anti-inflammatory, though human studies are limited.
Finally, it may interact with CYP2C9 substrates (another liver-processed group), but evidence is mixed.
Altogether, these interactions span 702 individual medications. Use the medication checker below with your exact prescriptions before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Cranberry Fruit?
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 Fruit interact with 712 drugs. Click any drug to see the details.
1 of the 1 ingredient in Cranberry Fruit interact with drugs. Each result below shows which ingredient is responsible. Cranberry, Powder
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Ado-trastuzumab Emtansine interactionAbemaciclibVerzenio
How Abemaciclib interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Abiraterone Acetate interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acalabrutinib interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + 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 Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + 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 Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + 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 Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Cranberry Fruit — through 1 ingredient. Tap an ingredient for the detail:
Cranberry, PowderCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, cranberry might increase the levels and adverse effects of CYP3A4 substrates.
Read the full Cranberry, Powder + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Cranberry Fruit 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, 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 Fruit, from the product label.
GNC
See all GNC products- Name
- General Nutrition Corporation
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15222
- Phone Number
- 1-888-462-2548
- Web Address
- gnc.com
Cranberry Fruit by GNC: Common Questions
Does Cranberry Fruit by GNC interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this help my urinary tract infection?
What are the side effects?
Is it safe during pregnancy or breastfeeding?
Why do I need to check my medications?
Can cranberry help with other conditions besides UTIs?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Cranberry Fruit is safe with your meds?
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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 Fruit’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Cranberry Fruit'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
- 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
Parts of this content are provided by the Therapeutic Research Center, LLC.
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.
© 2021 Therapeutic Research Center, LLC