What Reference Sources Say
NIH LiverTox: Uva Ursi (bearberry) describes uva ursi as an herbal product from Arctostaphylos uva-ursi leaves, containing arbutin, which is thought to be the active component through hydroquinone. It has traditionally been used for urinary complaints.
Safety Notes
The same source describes a case of eye (macular) injury after prolonged heavy tea use. NIH LactMed: Uva Ursi says uva ursi is generally considered contraindicated during breastfeeding. Long-term or high-dose use is the recurring concern.
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FemiCore does not show a bearberry amount or extract standardization on the page we checked, so we cannot compare it to any studied or traditional dose. Traditional use is also not the same as proof for bladder control.
Evidence-Transfer Checklist
- Extract type and arbutin content
- Daily amount and duration
- Population studied
- Endpoint (infection symptoms vs leakage)
Sources
How we wrote this page. Independent editorial research, last updated October 3, 2026. Medical statements are tied to the NIH, NCCIH, Cochrane or other sources listed above. We earn commissions on some links, which is explained in our affiliate disclosure. This page is not medical advice; talk to a clinician about bladder symptoms. Spot an error? Tell us.
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