Uva Ursi: Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
Uva ursi (bearberry) is a traditional herb for urinary-tract infections. It has some short-term rationale but is not a substitute for medical treatment of an infection.
What is Uva Ursi?
Uva ursi (Arctostaphylos uva-ursi), or bearberry, is a low shrub whose leaves have been used traditionally for urinary complaints.
What Uva Ursi is commonly used for
In supplements, Uva Ursi is most often included for women's bladder & urinary health, prostate & men's urinary health support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.
How Uva Ursi works
Its main compound, arbutin, is converted in the body to hydroquinone, which has antibacterial activity in the urinary tract — an effect that depends on alkaline urine and is intended only for short-term use.
What the evidence says
Here's an honest snapshot of what published research suggests about Uva Ursi — including where the evidence is limited.
- Some small studies suggest uva ursi may help with uncomplicated urinary symptoms short-term, but evidence is limited and it does not replace antibiotics for a true infection, which can become serious if untreated.
- Study quality and doses vary, and a result seen in research doesn't guarantee the same for any individual — use the sources below to check the current evidence on Uva Ursi rather than relying on marketing claims.
Typical dosage used in studies
Traditional short-term use provides standardised arbutin for no more than about a week at a time; prolonged use is discouraged. This is general information from research, not a personal recommendation or a dosing instruction.
Side effects and safety
Hydroquinone can be toxic to the liver with prolonged or high-dose use, so uva ursi is for short-term use only and is avoided in pregnancy, breastfeeding, kidney disease and in children. Persistent urinary symptoms need medical care. As with any supplement, it's sensible to introduce Uva Ursi on its own, use a trusted brand, and stop if you notice any reaction.
Medication interactions and who should avoid Uva Ursi
Medication & safety check
Herbs interact with prescription medicines more often than people expect — affecting drug levels, bleeding, blood pressure, blood sugar or sedation — and Uva Ursi is no exception. If you take any regular medication, are pregnant or breastfeeding, or manage a health condition, confirm Uva Ursi is appropriate for you before starting.
This is general information, not personal medical advice. If you take any medication, are pregnant or breastfeeding, or have a health condition, confirm it's safe to use Uva Ursi with your doctor or pharmacist first.
Sources & further reading
For authoritative background and the current research base on Uva Ursi, consult:
- PubMed — search the research on Uva Ursi
- NCCIH — Herbs at a Glance
- MedlinePlus — herbs & supplements
- MedlinePlus — drugs, herbs & supplements
Frequently asked questions
Does Uva Ursi actually work?
Some small studies suggest uva ursi may help with uncomplicated urinary symptoms short-term, but evidence is limited and it does not replace antibiotics for a true infection, which can become serious if untreated. As with most supplements, results vary between people and the marketing is often stronger than the evidence — so it's worth checking the research before relying on it.
Is Uva Ursi safe to take?
For most healthy adults at normal doses it's generally well tolerated, but there are real cautions. Hydroquinone can be toxic to the liver with prolonged or high-dose use, so uva ursi is for short-term use only and is avoided in pregnancy, breastfeeding, kidney disease and in children. Persistent urinary symptoms need medical care. If you take medication, are pregnant or breastfeeding, or have a health condition, check with a doctor or pharmacist first.
What is Uva Ursi used for?
In supplements, Uva Ursi is mainly included for women's bladder & urinary health, prostate & men's urinary health support — as nutritional support, not as a treatment for any medical condition.
Where you'll find Uva Ursi
On FactoWiki, Uva Ursi is the kind of ingredient you'll see discussed in these supplement categories. Each category guide breaks down what the evidence does and doesn't support.
Related ingredients to explore
Ingredients often studied or formulated alongside Uva Ursi — useful for understanding the full picture of a formula.