For the dietary management of IBS and UC
- 112.5 Billion CFU
- Probiotic Medical Food
- Refrigerated
For the dietary management of IBS, UC, and pouchitis
- 450 Billion CFU
- Probiotic Medical Food
- Refrigerated
For the dietary management of UC and pouchitis
- 900 Billion CFU
- Probiotic Medical Food
- Refrigerated
More Than a Probiotic. A Powerful Medical Food.
Pioneers in Probiotics. Leaders in Gut Health.
VSL#3® is an ultra-high-potency probiotic medical food — and the #1 gastroenterologist-recommended multi-strain probiotics brand.† Developed for people with serious gastrointestinal conditions, it’s trusted by healthcare professionals and customers alike for its scientific foundation, clinical credibility, and unwavering quality.
Built on Science. Proven in Practice.
Driven by research — not marketing trends — VSL#3® is trusted in clinical care for the dietary management of specific gastrointestinal conditions. It continues to set the standard for potency, consistency, and reliability in probiotic therapy.
Ultra-High Potency. Guaranteed.
VSL#3® products deliver between 112.5 billion and 900 billion live bacteria per serving, depending on the formulation. Unlike many probiotics that only promise potency at the time of manufacture, VSL#3® guarantees potency through expiration when stored as directed.
Clinically Researched Formulas. Real-World Results.
Each VSL#3® product combines 8 well-characterized probiotic strains from 3 genera to help maintain a balanced intestinal microbiota and support digestive health. The VSL#3® family is specially designed for the dietary management of irritable bowel syndrome (IBS), ulcerative colitis (UC), and pouchitis.
