fem-dophilus™ contains twopatented and clinically proven probiotic strains, Lactobacillus GR-1™ and Lactobacillus RC-14™ discovered and developed by Dr. Gregor Reid and Dr. Andrew Bruce at Urex Biotech. Over 20 years of research supports the oral use of GR-1™brand and RC-14™brand to colonize and protect the vaginal tract.*