Cranberries contain a wide variety of powerful phytochemicals that promote wellness, can prevent certain acute infections. Using antibiotics to prevent recurrence of UTIs can have undesirable side effects, such as gastrointestinal upset and acquired resistance. Cranberries contain highly active compounds called "A-type proanthocyanins", which help prevent recurring UTIs without these undesirable side effects. Instead of killing bacteria, A-type proanthocyanins in cranberries prevent bacteria from adhering to cells of the urinary tract and bladder. The bacteria are then easily flushed out. Cranberries support urinary tract health by preventing the adhesion of bacteria to the cells of the urinary tract and bladder.