Vitamin D can help fight infections by increasing the production of antimicrobial peptides. Organic whole cranberry extract may be able to inhibit pathogens such as E. coli from adhering to the tissues lining the urinary tract. This Dr. Formulated Urinary Tract+ formula also contains a 50 billion CFU, multi-strain probiotic.
Probiotics may help with UTIs for at least two reasons -- delivering digestive support, which aids the immune system by making more nutrients available to it; and bolstering the population of Lactobacillus in the vagina, which can make it less likely for harmful bacteria to take root when they are flourishing, but which can get depleted, especially after antibiotics have been taken.