Urinary system infections is a troublesome and embarrassing problem both for women and men. Unfortunately, nowadays this situation is very common. How to overcome it? One of the methods is supplementation which allows to keep the urinary system healthy. Cranberry extracts may be beneficial because, as the studies proved, they effectively reduce infections without weakening the immune system. In addition, proanthocyanidins contained in the cranberry prevent bacteria sticking to the walls of the urinary system and lower the pH of urine, thus form a hostile environment for colonization. Also there are natural diuretics such as nettle or green tea, which also should be taken into consideration, because they will rinse out any unwanted substances accumulated in the urinary system.