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.
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Trusted worldwide
A legacy built on trust and expertise.
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Rooted in science
Guided by probiotic research.
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Commitment to quality
Ensuring potency and reliability.
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Designed for diverse needs
Supporting gut and women’s health.
VSL#3® Benefits:
A Clinically Studied Medical FoodVSL#3° is a medical-grade formulation supported byclinical research.
Ultra-High Potency, Guaranteed
Contains 112.5 billion live bacteria (CFU) per capsulean ultra-high-potency formula designed to keep itslabeled potency through expiration when stored underrecommended conditions.
Multi-Strain
8 complementary strains from 3 different genera.
Formulated with Care.Free from Compromise.
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Dairy-Free
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Gluten-Free
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Soy-Free
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Nut-Free
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Vegan
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No GMOs
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.
VSL#3® Is Scientifically Formulated For The Dietary Management of IBS
Doctor Recommended
In a 2002 survey of gastroenterologists, 93% reported that IBS patients were satisfied with VSL#3.¹
The most frequently observed benefits:
Less bloating
Reduced pain
Better stool consistency and frequency
Overall symptom improvement
Clinically Studied and FODMAP Friendly Certified for the Dietary Management of IBS
In a 2021 clinical study, VSL#3®showed outcomes comparable to those achieved with a low FODMAP diet² — a commonly recommended but restrictive approach. Because VSL#3®is certified FODMAP Friendly, it can also be used alongside a low FODMAP diet for flexible dietary management.
1. Data on file 2. Ankerson L, et al. J Med Internet Res. 2021; 23(12): e30291.
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VSL#3® Capsules:Clean Ingredients. Verified Quality.
Free From Common Irritants:
- Dairy-Free
- Gluten-Free
- Soy-Free
- Nut-Free
- No GMOs
- Vegan
Certified for Peace of Mind:
- FODMAP Friendly Certified
- Halal Certified
- Kosher Certified
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VSL#3@ combines 8
complementary probiotic strains from 3 different genera to support gut microbiota diversity and digestive balance.
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VSL#3® is distributed in over 40
countries and counting -it's trusted by healthcare professionals and patients worldwide.
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VSL#3® is Dairy-Free
for individuals who avoid dairy due to dietary preferences or sensitivities.
