Trailing Arbutus Drug Interactions, Uses, Safety & More
What is this page for?
First and foremost: how Trailing Arbutus interacts with medications. The heart of this page is the interaction list — every drug Trailing Arbutus is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Trailing Arbutus is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy
Check Trailing Arbutus against your medication
Add one medicationDrugs that interact with Trailing Arbutus
0 medications have a known interaction with Trailing Arbutus, graded by severity. Select any drug for the full evidence-based detail.
We don’t currently list any known drug interactions for Trailing Arbutus. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.
What Severity, Likelihood & Evidence Mean
Severity — How Serious It Can Be
- Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
- Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
- Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
- No known interaction. Checked against our sources with nothing documented — not the same as proven safety.
Likelihood — How Well It’s Documented
- Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
- Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
- Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
- Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Where This Data Comes From
- Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
- Each drug listed above links to the full report for that exact Trailing Arbutus combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Trailing Arbutus: Uses, Safety & Side Effects
Trailing Arbutus is a low-growing North American woodland plant traditionally used in folk medicine for urinary and bladder complaints. There is very little modern scientific research on its safety or effectiveness, so it cannot be recommended with confidence. Talk to your pharmacist or doctor before using it, and avoid it during pregnancy and breastfeeding.
- Scientific name
- Epigaea repens
- Family
- Ericaceae
- Part used
- Leaves (occasionally the whole flowering plant)
- Common forms
- Tea, tincture, dried herb
- Urinary tract complaints
- Bladder irritation
- Kidney support (traditional)
- Mild diuretic
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
There is very little human research, so its safety is not well established.
Insufficient reliable information available; avoid using.
Read the full pregnancy detailInsufficient reliable information available; avoid using.
Read the full breastfeeding detailPregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
Trailing Arbutus (Epigaea repens) is a small, creeping evergreen plant in the heath family (Ericaceae). It grows close to the ground in woodlands of eastern North America and is known for its fragrant pink or white spring flowers. It is also sometimes called mayflower.
In traditional and folk medicine, the leaves were brewed into teas and used mainly for urinary and bladder complaints. Today it is rarely found as a commercial supplement, and most information about it comes from old herbal texts rather than modern science.
Uses & effectiveness
People have traditionally used Trailing Arbutus for urinary tract irritation, bladder complaints, and as a mild diuretic (to increase urine flow). These uses come from historical herbal practice, not from clinical trials.
The scientific evidence is very limited. There are no good-quality human studies showing that Trailing Arbutus works for any health condition. Because of this lack of research, we cannot say it is effective for any of its traditional uses. If you are dealing with a urinary or bladder problem, it is important to see a healthcare provider rather than relying on this herb.
How it works
Trailing Arbutus is related to other heath-family plants such as bearberry (uva-ursi). Like those plants, its leaves are thought to contain compounds called arbutin and various tannins. In laboratory settings, arbutin can break down into substances that may have mild antimicrobial activity in the urinary tract, and tannins have astringent (tissue-tightening) effects.
It is important to understand that these proposed mechanisms are mostly based on what is known about related plants and on laboratory work, not on studies of Trailing Arbutus itself in people. The actual amounts of these compounds in the plant and whether they have any real effect in the body are not well documented.
Safety & precautions
The safety of Trailing Arbutus has not been well studied. Because it may contain tannins and arbutin-type compounds, large amounts or long-term use could potentially cause stomach upset or other problems, similar to concerns raised with related plants.
People who should be especially cautious or avoid it include:
- Pregnant or breastfeeding women
- Children
- People with kidney disease
- People with stomach or digestive conditions
Because there is no reliable safety information, avoid Trailing Arbutus during pregnancy and breastfeeding. Always check with a pharmacist or doctor before trying any new herbal product.
Side effects
Specific side effects of Trailing Arbutus have not been clearly described in modern research. Based on its tannin content, possible effects could include stomach upset, nausea, or constipation, especially with strong teas or frequent use.
As with any plant product, allergic reactions are possible. Stop using it and seek medical care if you notice a rash, swelling, trouble breathing, or other signs of an allergic reaction.
Trailing Arbutus: Reported Adverse Effects
Documented safety reports on Trailing Arbutus from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.
Orally, chronic use of trailing arbutus may lead to hydroquinone toxicity. Symptoms of toxicity include tinnitus, vomiting, delirium, convulsions, and collapse. Liver damage, cachexia, hemolytic anemia, and hair depigmentation may also occur with long term use. Overdosage could lead to inflammation of the mucous membranes of the bladder and urinary tract, and may be accompanied by bloody urine, difficulty with urination, and painful urination.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Adverse-effects data: Natural Medicines, Therapeutic Research Center
Dosing
There is no established or standardized dose for Trailing Arbutus. It has not been studied enough to know a safe and effective amount, and quality of commercial products is not guaranteed.
If you choose to use a product that contains it, follow the directions on the label and do not exceed them. It is best to speak with a pharmacist or doctor first, since they can help you weigh whether it is appropriate for you.
Trailing Arbutus & Pregnancy
Trailing Arbutus & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 2 references that drive our Trailing Arbutus monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.
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
Brands that make products with Trailing Arbutus
8 brands in our database make a supplement containing Trailing Arbutus.
Supplement products with Trailing Arbutus
12 products in our database contain Trailing Arbutus. Open any to see its full ingredient list and every drug interaction we check.
Trailing Arbutus: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Products that contain Trailing Arbutus
A rotating sample of real supplements in our database that list Trailing Arbutus — open any to see its full ingredients and every drug interaction we check.
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