Plant MedicineCranberry (American)
Cranberry (American)
Vaccinium macrocarpon
Family: Ericaceae
Also known as: Large cranberry
At a glance
Best for: UTI prevention, Urinary tract health
Common forms: Culinary, Juice, Capsule
Evidence level: Well-supported
Cautions: May increase kidney stone risk in susceptible individuals
What it is
The American cranberry is the large commercial cranberry species widely grown in North America. It contains proanthocyanidins that prevent bacterial adhesion to urinary tract walls.
Traditional use
Used by Native Americans for UTIs, wounds, and as a food. Adopted in North American folk medicine for urinary health.
What modern research suggests (Well-supported)
Multiple trials support UTI prevention (not treatment) particularly in women with recurrent infections. Proanthocyanidins prevent E. coli adhesion to bladder walls.
Safety + interactions
Generally safe. High juice intake may increase kidney stone risk. May interact with warfarin (monitor INR). Avoid high-sugar varieties.
May interact with: Warfarin
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Disclaimer: This content is educational and not medical advice. Always consult a qualified healthcare provider before using any herbs or supplements, especially if you are pregnant, nursing, taking medications, or have a medical condition.