Jarrow Formulas Vegan Fem-Dophilus features two patented and clinically documented probiotic strains, Lactobacillus rhamnosus, GR-1 and Lactobacillus reuteri, RC-14. With 30+ years of research supports the oral use of GR-1 and RC-14 to colonize and protect the vaginal tract. Want to hear more? Check out customer-created Fem-Dophilus reviews below!