Cystitis means inflammation of the bladder and may be sudden in onset (acute) or chronic (longstanding). Inflammation and infection can travel upwards from the bladder and eventually affect the kidneys, which is called pyelonephritis. It is important to get bladder infections under control quickly, as continued episodes increase the likelihood of infection involving the upper urinary tract and the kidneys, which can result in permanent scarring of the kidneys. Urinary Tract Infection Sort By: Default Title - A to Z Title - Z to A Price - lowest first Price - highest first Time Added - latest first Popularity - most popular first Sales - best selling first Sandra Cabot Cranberry 17,000 Ultra (30 caps) Sandra Cabot Cranberry Ultra is used for urinary tract health and infection prevention $19.85   Ok