Strong kidneys and a healthy urinary tract are essential for disposing of bodily wastes. Support this vital system with Swanson Condition Specific Kidney Essentials. This unique timed-release formula includes potassium, an electrolyte mineral that helps maintain healthy fluid levels; cranberry, one of nature's best allies for a healthy urinary tract; and many more nutrients including vitamin C, B-complex vitamins, juniper berries and cornsilk.