VSL® Probiotics: A Legacy of Science in Every Strain.

Building on the trusted heritage of VSL#3®, VSL®Probiotics now includes innovative supplements like VSL4®, designed for everyday wellness.

  • Trusted worldwide

    A legacy built on trust andexpertise.

  • Rooted in science

    Guided by probiotic research.

  • Commitment to quality

    Ensuring potency andreliability.

  • Designed for diverse needs

    Supporting gut and women's health.

    Science Over Hype.Purpose Over Promises.

    Built on the legacy of VSL#3 a probiotic trusted by healthcare professionals and recognized for its scientificrigor -VSL Probiotics continues to advance microbiome science through targeted, high-quality formulations thatsupport both clinical dietary management and everyday wellness.

    • Committed to Potency

      Potent probiotic formulations guaranteed to maintain labeled CFU counts through expiration.

    • Designed for Viability

      Carefully designed formulations that help safeguard livebacteria from production to delivery.

    • Science-Led Strain Selection

      Thoughtfully formulated with complementary probioticstrains chosen for function and purpose.

      What Our Customers Say

      • Works Great!

        Really calms my Gut. I'm so thankful mydoctor recommended this product! Itworks well everyday.

        Carol F.

      • Best Probiotic ever!

        Can't live without it! Keeps my digestivesystem in its lane and I don't have to beon edge all the time about getting sick...

        Awilda G.

      • Best probiotic ever

        My doctor recommended I should useVSL#3 probiotics. It has honestlyimproved my quality of life. It is expensi...

        SHARON R.

        Everyday Gut Support

        Helps reduce occasional bloating, gas, anddigestive discomfort while promoting normal bowel function.*No refrigeration required-formulated formodern lifestyles and travel.Contains the same 8 clinically studiedprobiotic strains found in VSL#3®.

        Clean Ingredients. Trusted Standards.

        We believe what's not in your probiotic is just as important as what is.

        No GMOs

        Soy-Free

        Dairy-Free

        Gluten-Free

        The VSL® Probiotics Difference

        Medical Foods & Supplements

        From medical foods formulated for the dietarymanagement of Gl conditions to supplements fordaily wellness, VSL® Probiotics is made to thehighest standards of quality and consistency.

        Proven Potency

        Up to 900 billion live bacteria per serving -verified to maintain labeled CFU counts throughexpiration when stored as recommended.

        Evidence-Based Formulations

        Formulated with probiotic strains and combinations supported by published researchand guided by microbiome science.

        Trusted by Professionals

        Rooted in the heritage of VSL#3®-a probiotic trusted by healthcare professionals-VSL®Probiotics carries that same dedication to qualityand research into every new formulation.

        Our Purpose: Science That Serves People

        Microbiome health isn't one-size-fits-all - and neither are we.
        VSL® Probiotics exists to bridge the gap between scientific discovery andeveryday wellbeing. We develop precision-formulated probiotics groundedin a legacy of microbiome research, helping people manage complexdigestive conditions and support their daily gut and vaginal health.

        The VSL® Difference:Proven. Precise.Trusted.

        VSL® Probiotics builds on the legacy of VSL#3® - a formulation trusted by healthcare professionals for its quality, consistency, andreliability. That same foundation guides every product in the VSL® Probiotics family, from clinically studied medical foods to precision-formulated daily supplements.
        Our focus remains the same: creating probiotic formulation sgrounded in evidence, crafted with precision, and respected fortheir consistency - not driven by trends, but by trust earned through experience.

        FAQS

        What is VSL#3®?

        VSL#3® is an ultra-high-potency probiotic medical food intended for thedietary management of irritable bowel syndrome (IBS), ulcerative colitis (UC),and an ileal pouch (pouchitis).

        How should I store VSL#3®?

        What is a Medical Food?

        How does VSL#3@ compare to a Low FODMAP diet forIBS management?

        In a 2021 clinical study, VSL#3® demonstrated dietary management outcomes in people with IBS comparable to those achieved with a low FODMAP diet1 - a commonly recommended but restrictive approach.Because VSL#3@ is certified FODMAP Friendly, it can also be used alongsidea low FODMAP diet for flexible dietary management.
        1Ankerson L, et al. J Med Internet Res. 2021; 23(12): e30291.