Urinary System Support Ingredients & Drug Interactions
by Herb Pharm
What is this page for?
First and foremost: checking Urinary System Support 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
Urinary System Support is a dietary supplement by Herb Pharm with 5 active ingredients. Its ingredients are commonly taken for urinary tract and bladder problems, mild fluid retention (diuretic), kidney and prostate concerns.Based on those ingredients, 1,032 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Uva-Ursi Leaf Extract, Corn Silk Extract, Fresh, Undried, Horsetail Aerial Parts Extract, Fresh, Undried. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Urinary System Support by Herb Pharm
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HelloPharmacist Scorecard of Urinary System Support by Herb Pharm
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
Low disclosure
This liquid blend contains five active herbal extracts: corn silk (fresh, undried), goldenrod flowering top (fresh, undried), uva ursi leaf, horsetail aerial parts (fresh, undried), and juniper berry. The product also holds a proprietary extract blend, whose individual components are listed separately.
Beyond these actives, the formula includes cane alcohol, distilled water, and glycerin as inactive ingredients.
Does it work?
Leans against
The evidence we hold doesn't establish that any of these ingredients work reliably for their marketed urinary-support purpose. Corn silk, goldenrod, horsetail, and juniper all carry ratings of insufficient reliable evidence for the conditions they're traditionally used for—urinary tract infections, kidney stones, and benign prostate hyperplasia among them.
Uva ursi is actually rated possibly ineffective for urinary tract infections. Until better human research emerges, we can't say whether this blend delivers real benefit.
How safe is it?
Well-documented data
Corn silk and goldenrod are generally well tolerated for short-term use, though human safety data are limited; corn silk may cause low potassium with prolonged use, and goldenrod can trigger allergic contact dermatitis in sensitive people. Uva ursi is well tolerated at low doses short-term but can be toxic at high doses or with long-term use, causing diarrhea, nausea, stomach upset, and vomiting—very high doses (30 grams or more) may be fatal.
Horsetail carries a real risk: crude horsetail contains an enzyme that depletes thiamine (vitamin B1) with prolonged use, and one case report linked this to autism in a child exposed during pregnancy. Juniper is generally tolerated in food amounts but may irritate the kidneys at medicinal doses and shouldn't be used long-term.
None of these ingredients have adequate safety data for pregnancy or breastfeeding; the safety notes advise against all five during pregnancy and breastfeeding.
Meds to double-check
Moderate interaction found
Before taking this product, double-check if you're on any HIV medications (especially NRTIs or efavirenz), blood pressure drugs, blood thinners like warfarin, diabetes medications, steroids, diuretics, lithium, liver enzyme substrates, or urinary acidifying agents. These are the drug classes most likely to interact, and the interactions can range from reduced drug effectiveness to serious electrolyte problems.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with graded evidence leaning against its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This product is a complex herbal blend with multiple documented drug interactions and limited evidence of effectiveness. If you take any regular medications—especially for blood pressure, diabetes, blood thinning, HIV, or mood—check with your pharmacist before using it.
It's not intended for pregnancy, breastfeeding, or long-term use.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 5 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 24, 2024.
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 Urinary System Support, straight from the product label.
| Brand | Herb Pharm |
|---|---|
| Barcode (UPC) | 090700002718 |
| Net contents | 4 Fluid Ounce(s); 120 mL |
| Market status | On market |
| Date entered into DSLD | Jan 24, 2024 |
| DSLD ID | 307829 |
| Product type | Botanical |
| Supplement form | Liquid |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Urinary System Support by Herb Pharm, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Extract Blend | 656 mg | -- |
| Corn Silk Extract, Fresh, Undried | 0 NP | -- |
| Goldenrod Flowering Top Extract, Fresh, Undried | 0 NP | -- |
| Uva-Ursi Leaf Extract | 0 NP | -- |
| Horsetail Aerial Parts Extract, Fresh, Undried | 0 NP | -- |
| Juniper Berry Extract | 0 NP | -- |
Other ingredients: Cane Alcohol, Water, Distilled, Glycerin
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Suggested use Shake well before using Adults: Add 1 squeeze of the dropper bulb to 2 oz. of water or juice, 2 to 5 times per day. Best taken between meals.
Precautions
Caution: Seek expert medical advice before taking during pregnancy.
Keep out of the reach of children
Storage
Store away from heat & light
Formulation
System restoration Urinary
Gluten-free
FDA Statement of Identity
Herbal Supplement
FDA Disclaimer Statement
This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Urinary System Support by Herb Pharm 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 Urinary System Support by Herb Pharm
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size0.7 mL Dosage formLiquid Servings per container168 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Other (inactive) ingredients: Cane Alcohol, Water, Distilled, Glycerin. These complete the product’s ingredient list but are not active constituents.
Urinary System Support by Herb Pharm Drug Interactions
HelloPharmacist Interaction Report
Herb Pharm's Urinary System Support is a five-ingredient liquid blend with documented interactions affecting a broad range of medications.
The most serious concern is with nucleoside reverse transcriptase inhibitors (NRTIs) and efavirenz — two case reports linked horsetail-containing supplements to detectable viral loads in HIV patients, suggesting this product might reduce their effectiveness.
Read the full breakdown — every affected drug type, severity by severity
Corn silk extract carries Moderate interactions with blood pressure drugs (risk of dangerously low blood pressure), steroids (risk of low potassium), diabetes medications (risk of low blood sugar), water pills or diuretics (risk of low sodium and potassium), and warfarin (vitamin K content may interfere with blood thinning). Goldenrod's documented interaction is also Moderate: it may amplify the effects of diuretic drugs.
Uva ursi interacts Moderately with liver enzyme substrates (CYP2C19 and CYP3A4), glucuronidated medications, lithium, and urinary acidifying agents, plus a Minor interaction with P-glycoprotein substrates. Horsetail adds Moderate interactions with diabetes drugs, diuretics, lithium, and NRTIs.
Juniper berry carries Moderate interactions with diabetes medications and Minor interactions with diuretics and lithium.
Although we could not check the proprietary extract blend itself, the individual components we reviewed all have documented interactions. Altogether, these interactions span 1,017 individual medications.
Run your exact medications through the search tool on this page before starting — this product touches a lot of drug classes.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Urinary System Support?
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 Urinary System Support interact with 1,032 drugs. Click any drug to see the details.
5 of the 5 ingredients in Urinary System Support interact with drugs. Each result below shows which ingredient is responsible. Uva-Ursi Leaf Extract Corn Silk Extract, Fresh, Undried Horsetail Aerial Parts Extract, Fresh, Undried Juniper Berry Extract Goldenrod Flowering Top Extract, Fresh, Undried
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Ado-trastuzumab Emtansine interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Horsetail Aerial Parts Extract, Fresh, UndriedNucleoside Reverse Transcriptase Inhibitors (nrtis) Moderate
Interaction Summary
Theoretically, horsetail might decrease the levels and clinical effects of NRTIs.
Read the full Horsetail Aerial Parts Extract, Fresh, Undried + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Horsetail Aerial Parts Extract, Fresh, UndriedNucleoside Reverse Transcriptase Inhibitors (nrtis) Moderate
Interaction Summary
Theoretically, horsetail might decrease the levels and clinical effects of NRTIs.
Read the full Horsetail Aerial Parts Extract, Fresh, Undried + Abacavir, Lamivudine interactionAbemaciclibVerzenio
How Abemaciclib interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 2c19 (cyp2c19) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP2C19 substrates.
Read the full Uva-ursi Leaf Extract + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, P-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acalabrutinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Urinary System Support — through 3 ingredients. Tap an ingredient for the detail:
Horsetail Aerial Parts Extract, Fresh, UndriedAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking horsetail with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Horsetail Aerial Parts Extract, Fresh, Undried + Acarbose interactionCorn Silk Extract, Fresh, UndriedAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking corn silk with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Corn Silk Extract, Fresh, Undried + Acarbose interactionJuniper Berry ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking juniper berry with antidiabetes medications might cause additive hypoglycemia.
Read the full Juniper Berry Extract + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Corn Silk Extract, Fresh, UndriedAntihypertensive Drugs Moderate
Interaction Summary
Taking corn silk extract with antihypertensive drugs might increase the risk of hypotension.
Read the full Corn Silk Extract, Fresh, Undried + Acebutolol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Urinary System Support — through 5 ingredients. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Caffeine, Pyrilamine interactionGoldenrod Flowering Top Extract, Fresh, UndriedDiuretic Drugs Moderate
Interaction Summary
Theoretically, goldenrod might increase the effects and adverse effects of diuretic drugs.
Read the full Goldenrod Flowering Top Extract, Fresh, Undried + Acetaminophen, Caffeine, Pyrilamine interactionCorn Silk Extract, Fresh, UndriedDiuretic Drugs Moderate
Interaction Summary
Taking corn silk with diuretic drugs might increase the risk of adverse effects such as hyponatremia and hypokalemia.
Read the full Corn Silk Extract, Fresh, Undried + Acetaminophen, Caffeine, Pyrilamine interactionHorsetail Aerial Parts Extract, Fresh, UndriedDiuretic Drugs Moderate
Interaction Summary
Theoretically, taking horsetail with diuretic drugs might increase potassium loss and the risk of hypokalemia.
Read the full Horsetail Aerial Parts Extract, Fresh, Undried + Acetaminophen, Caffeine, Pyrilamine interactionJuniper Berry ExtractDiuretic Drugs Minor
Interaction Summary
Theoretically, juniper berry might increase the risk of adverse effects from diuretic drugs.
Read the full Juniper Berry Extract + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Urinary System Support — through 1 ingredient. Tap an ingredient for the detail:
Uva-ursi Leaf ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
Read the full Uva-ursi Leaf Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Urinary System Support with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Uva-Ursi Leaf Extract
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, uva ursi may decrease the metabolism of CYP2C19 substrates.
In vitro, uva ursi appears to inhibit cytochrome CYP2C19. This effect has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, uva ursi may decrease the metabolism of CYP3A4 substrates.
In vitro, uva ursi appears to inhibit CYP3A4. This effect has not been reported in humans.
Glucuronidated Drugs
Theoretically, uva ursi may increase levels of drugs metabolized by glucuronidation.
In vitro, uva ursi extract appears to strongly inhibit UDP-glucuronosyltransferase (UGT) 1A1 (UGT1A1). However, uva ursi extract does not appear to inhibit UGT1A1 in animal models. This effect has not been reported in humans.
Lithium
Theoretically, uva ursi may increase lithium levels, necessitating a decrease in dose.
Uva ursi may have diuretic properties. Diuretics may increase lithium reabsorption with sodium in the proximal tubule of the kidney. Theoretically, uva ursi might reduce excretion and increase levels of lithium.
Urinary Acidifying Agents
Effects of uva ursi in the urinary tract may be reduced by urinary acidifying agents.
Uva ursi seems to work best in alkaline urine. Theoretically, taking uva ursi with medications known to acidify the urine may decrease any effects of uva ursi on the urinary tract.
P-Glycoprotein Substrates
Theoretically, uva ursi may alter the levels of drugs transported by P-glycoprotein.
In vitro, uva ursi appears to inhibit the multi-drug transporter protein, P-glycoprotein. This effect has not been reported in humans.
Corn Silk Extract, Fresh, Undried
Antidiabetes Drugs
Theoretically, taking corn silk with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research in diabetic mice shows that taking corn silk extract lowers fasting blood glucose levels.
Antihypertensive Drugs
Taking corn silk extract with antihypertensive drugs might increase the risk of hypotension.
Clinical research in both hypertensive and normotensive adults shows that taking corn silk extract lowers systolic and diastolic blood pressure.
Corticosteroids
Taking corn silk with corticosteroids might increase the risk of hypokalemia.
Clinical research shows that taking corn silk extract increases the urinary excretion of potassium.
Diuretic Drugs
Taking corn silk with diuretic drugs might increase the risk of adverse effects such as hyponatremia and hypokalemia.
Clinical research shows that taking corn silk extract increases urine volume and promotes the urinary excretion of sodium and potassium. Some patients may require electrolyte supplementation.
Warfarin (Coumadin)
Theoretically, suddenly stopping, starting, or changing corn silk treatment may alter the effects of warfarin.
Corn silk contains vitamin K. Individuals taking warfarin should consume a consistent daily amount of corn silk to maintain consistent anticoagulation.
Horsetail Aerial Parts Extract, Fresh, Undried
Antidiabetes Drugs
Theoretically, taking horsetail with antidiabetes drugs might increase the risk of hypoglycemia.
Equisetum myriochaetum has demonstrated hypoglycemic activity in clinical research. In an animal diabetic model, Equisetum giganteum had hypoglycemic effects. It is unclear whether other horsetail species have hypoglycemic effects.
Diuretic Drugs
Theoretically, taking horsetail with diuretic drugs might increase potassium loss and the risk of hypokalemia.
Laboratory research shows that various species of horsetail have diuretic properties. Due to its diuretic effects, there has been concern that taking horsetail along with potassium-depleting diuretics might increase the risk for hypokalemia. However, pharmacokinetic research in humans shows that taking horsetail 900 mg daily for 4 days does not affect urinary excretion of electrolytes, including potassium and sodium, despite having a diuretic effect similar to taking hydrochlorothiazide 25 mg daily. It is unclear if taking horsetail for a longer duration would affect electrolyte levels. Until more is known, use with caution.
Efavirenz (Sustiva)
Theoretically, horsetail might decrease the levels and clinical effects of efavirenz.
In two case reports, patients were found to have detectable viral loads when taking horsetail-containing supplements along with an antiretroviral regimen that included efavirenz. In one case, the antiretroviral regimen included zidovudine, lamivudine, and efavirenz; in the other case, the regimen consisted of emtricitabine, tenofovir disoproxil fumarate, and efavirenz. One month after discontinuing horsetail, the viral loads became undetectable in both cases. The exact mechanism of this interaction is unknown. It is also unclear if this interaction is specific to efavirenz or if it is related to various components of antiretroviral therapy.
Lithium
Theoretically, horsetail might increase the levels and adverse effects of lithium.
Animal research suggests that horsetail has diuretic properties. Theoretically, due to these potential diuretic effects, horsetail might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.
Nucleoside Reverse Transcriptase Inhibitors (Nrtis)
Theoretically, horsetail might decrease the levels and clinical effects of NRTIs.
In two case reports, patients were found to have detectable viral loads when taking horsetail-containing supplements along with an antiretroviral therapy. In one case, the antiretroviral regimen included zidovudine, lamivudine, and efavirenz; in the other case, the regimen consisted of emtricitabine, tenofovir disoproxil fumarate, and efavirenz. One month after discontinuing the supplement, the viral loads became undetectable in both cases. The exact mechanism of these interactions is unknown. It is also unclear if these interactions are specific to NRTIs or if they are related to various components of antiretroviral therapy.
Juniper Berry Extract
Antidiabetes Drugs
Theoretically, taking juniper berry with antidiabetes medications might cause additive hypoglycemia.
Animal research shows that juniper berry can lower blood glucose.
Diuretic Drugs
Theoretically, juniper berry might increase the risk of adverse effects from diuretic drugs.
Juniper berry is thought to have mild diuretic effects.
Lithium
Theoretically, juniper berry might reduce lithium excretion and increase serum levels of lithium.
Juniper berry is thought to have mild diuretic effects.
Goldenrod Flowering Top Extract, Fresh, Undried
Diuretic Drugs
Theoretically, goldenrod might increase the effects and adverse effects of diuretic drugs.
In vitro and animal research suggests that goldenrod has diuretic effects.
Brand information
Manufacturer and brand details for Urinary System Support, from the product label.
Herb Pharm
See all Herb Pharm products- Name
- Herb Pharm
- City
- Williams
- State
- OR
- ZipCode
- 97544
- Phone Number
- 800-348-4372
- Web Address
- www.herb-pharm.com
Urinary System Support by Herb Pharm: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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 Urinary System Support’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Corn Silk
Interacts with 290 drugsCorn silk is a traditional herbal remedy taken as a tea or extract, mostly for urinary and mild fluid-related complaints. High-quality human evidence for these uses is limited, so it should...
Read the full Corn Silk monograph → Herb & supplement monographGoldenrod
Interacts with 75 drugsGoldenrod is a flowering plant traditionally used as an herbal diuretic and for urinary tract health. Human evidence is limited, and while it is generally well tolerated, people with certain...
Read the full Goldenrod monograph → Herb & supplement monographUva Ursi
Interacts with 803 drugsUva ursi is a traditional herb used mainly for urinary tract infections, and its leaves contain a compound called arbutin that may have antimicrobial effects in the urine. Evidence in people...
Read the full Uva Ursi monograph → Herb & supplement monographHorsetail
Interacts with 188 drugsHorsetail is a traditional herb most often used as a mild diuretic and for hair, nail, and bone support, but high-quality human evidence is limited. It can cause thiamine (vitamin B1) loss w...
Read the full Horsetail monograph → Herb & supplement monographJuniper
Interacts with 162 drugsJuniper berry is a traditional herb best known for flavoring gin and for its folk use as a diuretic and digestive aid. Solid human evidence for its health benefits is limited, and it can irr...
Read the full Juniper monograph →Sources & How We Checked
Urinary System Support'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 39 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.
Corn Silk 4 references
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- George GO, Idu FK. Corn silk aqueous extracts and intraocular pressure of systemic and non-systemic hypertensive subjects. Clin Exp Optom. 2015 Mar;98(2):138-49. PubMed
- Sheng L, Chen Q, Di L, Li N. Evaluation of anti-diabetic potential of corn silk in high-fat diet/streptozotocin- induced type 2 diabetes mice model. Endocr Metab Immune Disord Drug Targets. 2020. PubMed
Goldenrod 6 references
- Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
- Uter, W., Nohle, M., Randerath, B., and Schwanitz, H. J. Occupational contact urticaria and late-phase bronchial asthma caused by compositae pollen in a florist. Am J Contact Dermat. 2001;12(3):182-184. DOI
- Chodera, A., Dabrowska, K., Sloderbach, A., Skrzypczak, L., and Budzianowski, J. [Effect of flavonoid fractions of Solidago virgaurea L on diuresis and levels of electrolytes]. Acta Pol.Pharm 1991;48(5-6):35-37.
- Chodera, A., Dabrowska, K., Bobkiewicz-Kozlowska, T., Tkaczyk, J., Skrzypczak, L., and Budzianowski, J. [Effect of leiocarposide on experimental urinary calculi in rats]. Acta Pol.Pharm 1988;45(2):181-186.
- Chodera, A., Dabrowska, K., Skrzypczak, L., and Budzianowski, J. [Further studies on the diuretic effect of leiocarposide]. Acta Pol.Pharm 1986;43(5):499-503.
- Chodera, A., Dabrowska, K., Senczuk, M., Wasik-Olejnik, A., Skrzypczak, L., Budzianowski, J., and Ellnain-Wojtaszek, M. [Diuretic effect of the glycoside from a plant of the Solidago L. genus]. Acta Pol.Pharm 1985;42(2):199-204.
Uva Ursi 8 references
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- Schulz V, Hansel R, Tyler VE. Rational Phytotherapy: A Physician's Guide to Herbal Medicine. Terry C. Telger, transl. 3rd ed. Berlin, GER: Springer, 1998.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Wang L, Del Priore LV. Bull's-eye maculopathy secondary to herbal toxicity from uva ursi. Am J Ophthalmol 2004;137:1135-7. PubMed
- Beaux, D., Fleurentin, J., and Mortier, F. Effect of extracts of Orthosiphon stamineus Benth, Hieracium pilosella L., Sambucus nigra L. and Arctostaphylos uva-ursi (L.) Spreng. in rats. Phytother.Res 1999;13(3):222-225.
- de Arriba SG, Naser B, Nolte KU. Risk assessment of free hydroquinone derived from Arctostaphylos Uva-ursi folium herbal preparations. Int J Toxicol. 2013;32(6):442-453.
- Park JB, Kim D, Min JS, et al. Identification and characterization of in vitro inhibitors against UDP-glucuronosyltransferase 1A1 in uva-ursi extracts and evaluation of in vivo uva-ursi-drug interactions. Food Chem Toxicol. 2018;120:651-661. PubMed
- Chauhan B, Yu C, Krantis A, et al. In vitro activity of uva-ursi against cytochrome P450 isoenzymes and P-glycoprotein. Can J Physiol Pharmacol. 2007;85(11):1099-107.
Horsetail 14 references
- Sudan BJ. Seborrhoeic dermatitis induced by nicotine of horsetails (Equisetum arvense L.). Contact Dermatitis 1985;13:201-2.
- Perez Gutierrez RM, Laguna GY, Walkowski A. Diuretic activity of Mexican equisetum. J Ethnopharmacol 1985;14:269-72. PubMed
- Lemus I, Garcia R, Erazo S, et al. Diuretic activity of an Equisetum bogotense tea (Platero herb): evaluation in healthy volunteers. J Ethnopharmacol 1996;54:55-8. PubMed
- Revilla MC, Andrade-Cetto A, Islas S, Wiedenfeld H. Hypoglycemic effect of Equisetum myriochaetum aerial parts on type 2 diabetic patients. J Ethnopharmacol 2002;81:117-20. PubMed
- Tiktinskii, O. L. and Bablumian, I. A. [Therapeutic action of Java tea and field horsetail in uric acid diathesis]. Urol.Nefrol.(Mosk) 1983;3(1):47-50.
- Henderson JA, Evans EV, and McIntosh RA. The antithiamine action of Equisetum. J Amer Vet Med Assoc 1952;120:375-378.
- Carneiro DM, Freire RC, Honório TC, Zoghaib I, Cardoso FF, Tresvenzol LM, de Paula JR, Sousa AL, Jardim PC, da Cunha LC. Randomized, Double-Blind Clinical Trial to Assess the Acute Diuretic Effect of Equisetum arvense (Field Horsetail) in Healthy Voluntee
- Klnçalp S, Ekiz F, Basar Ö, Coban S, Yüksel O. Equisetum arvense (Field Horsetail)-induced liver injury. Eur J Gastroenterol Hepatol. 2012 Feb;24(2):213-4. PubMed
- Ortega García JA, Angulo MG, Sobrino-Najul EJ, Soldin OP, Mira AP, Martínez-Salcedo E, Claudio L. Prenatal exposure of a girl with autism spectrum disorder to 'horsetail' (Equisetum arvense) herbal remedy and alcohol: a case report. J Med Case Rep. 2011 M PubMed
- Cordova E, Morganti L, Rodriguez C. Possible Drug-Herb Interaction between Herbal Supplement Containing Horsetail (Equisetum arvense) and Antiretroviral Drugs. J Int Assoc Provid AIDS Care. 2017;16(1):11-13.
- García Gavilán MD, Moreno García AM, Rosales Zabal JM, Navarro Jarabo JM, Sánchez Cantos A. Case of drug-induced acute pancreatitis produced by horsetail infusions. Rev Esp Enferm Dig. 2017 Apr;109(4):301-304. PubMed
- Vieira GT, de Oliveira TT, Carneiro MAA, et al. Antidiabetic effect of Equisetum giganteum L. extract on alloxan-diabetic rabbit. J Ethnopharmacol. 2020;260:112898. PubMed
- Health Canada. Organism-Equisetum arvense. Available at: http://webprod.hc-sc.gc.ca/nhpid-bdipsn/ingredReq.do?id=6117&lang=eng. Accessed 21-July 2021.
- Bates D, Duong TB, Kheyson S, Moore K. Hyponatremia Secondary to Decreased Oral Intake and SIADH and Possibly Exacerbated by Horsetail (Equisetum arvense). Can J Hosp Pharm 2021;74(4):386-389. PubMed
Juniper 7 references
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
- Sanchez de Medina F, Gamez MJ, Jimenez I, et al. Hypoglycemic activity of juniper "berries." Planta Med 1994;60:197-200. PubMed
- Swanston-Flatt SK, Day C, Bailey CJ, Flatt PR. Traditional plant treatments for diabetes. Studies in normal and streptozotocin diabetic mice. Diabetologia 1990;33:462-4. PubMed
- Tammaro A, Adebanjo GAR, Chello C, et al. Bullous dermatitis caused by common juniper. Contact Dermatitis. 2020. 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