I have read about the effects of unsweetened cranberry juice and have found this brand to be the best for me.  I've used it for years before I found it on line for a cheaper price.  It is rich in flavor, yes it's bitter but if you add a little stevia it is a wonderfully healthy refreshing exchange for a sugary drink or soda.  It helps clean the urinary tract and bladder, has antioxidants and many other benefits...best benefit no sugar.