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2 ingredients
Fruits — See the category page
Fruits
Strong evidenceCranberry
A Cochrane review of 50 randomised trials found a 30 % lower risk of UTI. But the effect appeared in some groups and not others.
Fruits
Strong evidenceGrapefruit
Grapefruit blocks the gut enzyme (CYP3A4) that breaks down many drugs. Blood levels of some medicines rise, and one glass lasts more than a day.