"Cranberry juice contains proanthocyanidins, which has been shown to help stop bacteria from binding itself to the bladder walls.This means that the bacteria cannot multiply further in the bladder and flushes them out of the body. Cranberry juice also makes urine more acidic, creating an unsuitable environment for bacteria to thrive". (Lifesum, Lovisa Nilsson)
However, cranberry juice is known to have high sugar content!