We treated our 14 pound dog's urinary tract infection with food grade iodine. We gave him 8 drops of Iosol (Brand Name) iodine in 4 cups of water. UTI cleared up in 2 days. Reduced iodine dosage to 2 drops for maintenance. According to research at Harvard, women should take 15 drops of Iosol every 3 hours in 8 oz of water until the UtI is gone. Usually 2 or 3 days. Excess Iosol is excreted in urine.