Uva Ursi (Bearberry)
The most powerful herbal urinary antiseptic. When UTIs hit, this is what herbalists reach for, but it requires knowing how to use it properly.
Quick Facts
Latin Name
Arctostaphylos uva-ursi
Active Compound
Arbutin (converts to hydroquinone in urine)
Primary Use
Urinary tract infections, cystitis
Form
Tea, tincture, capsule
What It Is
Uva ursi ("bear's grape") is an evergreen shrub native to northern regions. Bears eat the berries, hence the name. But it's the leaves that are medicinal, containing arbutin, which becomes a powerful urinary antiseptic.
Unlike most herbs, uva ursi's mechanism is well understood. Arbutin is absorbed intact, travels to the kidneys, and converts to hydroquinone in the urine, which directly kills bacteria. German Commission E approved it for UTIs.
How It Works
- →Arbutin conversion: Absorbed intact, then converted to hydroquinone in the urinary tract
- →Requires alkaline urine: Hydroquinone release requires pH above 8, must alkalize for full effect
- →Antibacterial: Effective against E. coli, Staphylococcus, Pseudomonas, common UTI pathogens
- →Astringent: Tannins help tighten and tone urinary tract tissues
Traditional Use
Native Americans used uva ursi for urinary and kidney problems for centuries. European settlers adopted it, and by the 1800s it was in the official pharmacopoeias of most Western countries.
It was the standard treatment for cystitis and UTIs before antibiotics, and many herbalists argue it's still the better choice for uncomplicated infections, without the microbiome damage.
When to Use It
Acute UTI (uncomplicated)
First-line treatment for bladder infections without fever or kidney involvement
Recurrent UTI prevention
Short courses when you feel one coming on, at first symptoms
Interstitial cystitis support
Some find relief, the astringent action may help
NOT for kidney infections (pyelonephritis), UTIs with fever, or complicated infections. See a doctor for these.
The Alkalizing Protocol
Critical:Uva ursi only works in alkaline urine. If your urine is acidic, the arbutin won't release hydroquinone.
• Take 1/2 tsp baking soda in water, 3-4x daily during treatment
• Or use potassium citrate supplements
• Avoid acidic foods: citrus, cranberry, vitamin C, meat
• Test urine pH if possible, aim for pH 8+
Dosing Protocol
Standardized Extract
400-800mg (providing 100-200mg arbutin), 3x daily
Tea (cold infusion preferred)
3g dried leaf in cold water 12-24 hours, less tannin extraction
Tincture
30-60 drops, 3-4x daily
Maximum duration: 7-10 days. Do not use long-term, hydroquinone can be hepatotoxic with extended use.
Contraindications
- • Kidney disease: Do not use if kidneys are compromised
- • Pregnancy/breastfeeding: Hydroquinone is not safe for fetus/infant
- • Children: Not for children under 12
- • Long-term use: Maximum 7-10 days, no more than 5x per year
- • Liver disease: Hydroquinone is processed by the liver