Dr. Formulated Probiotics Urinary Tract + is a unique refrigerated probiotic formula combined with clinically studied Organic Pacran? Cranberry. Just 2 capsules a day support women?s urinary tract and immune health.Probiotics are important to support a woman?s immune system, so Dr. Perlmutter created this unique formula with probiotics, clinically studied organic whole cranberry and vitamin D3 to support healthy urinary tract function and promote the growth of good bacteria. More specifically, Urinary Tract + contains 500mg of organic Pacran? cranberry, the clinically studied amount in Gold Standard human trials. Pacran? is certified organic cranberry powder specifically designed to support urinary tract health. Urinary Tract + also contains 50 billion CFU from 16 probiotics, including L. reuteri and L. acidophilus NCFM?, plus whole food vitamin D (1,000 IU) nutrient support for immune system health.