Cranberry is a North American bog fruit with a well-established role in urinary tract health. Its proanthocyanidins prevent E. coli bacteria from adhering to the bladder wall — a mechanism of action confirmed across multiple clinical trials. Unlike antibiotics, cranberry does not kill bacteria but blocks attachment, reducing recurrent UTI frequency without contributing to antibiotic resistance.
fruit
juice, tea, extract, capsule, powder
1–2 tsp dried fruit/powder per cup as tea; or 36mg PAC equivalent daily (standardised extract) for UTI prevention
Generally safe as food or tea. Cranberry supplements may increase warfarin effect — consult doctor if anticoagulated. Kidney stone patients should monitor oxalate intake from supplements.
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