Seres Therapeutics

Seres Therapeutics is a commercial-stage company developing novel microbiome therapeutics for serious diseases. Our lead program, VOWST™, obtained U.S. FDA approval in April 2023 as the first orally administered microbiota-based therapeutic to prevent recurrence of C. difficile infection (CDI) in adults following antibacterial treatment for recurrent CDI and is being commercialized in collaboration with Nestlé Health Science. We are evaluating SER-155 in a Phase 1b study in patients receiving allogeneic hematopoietic stem cell transplantation to reduce incidences of gastrointestinal infections, bloodstream infections, and graft-versus-host disease as well as additional preclinical stage programs targeting Infection Protection in medically compromised patients. We are also conducting research to inform further development of microbiome therapeutics for ulcerative colitis. For more information, please visit