
It's What's on the Inside
Our unique 8-strain formulation is designed so each straincomplements the others, helping maintain a balanced gutmicrobiota. Billions of live, beneficial bacteria work together tosupport digestive health.
More Than a Probiotic.A Powerful Medical Food.
Pioneers in Probiotics.Leaders in Gut Health.
VSL#3 is an ultra-high-potencyprobiotic medical food - and the #1gastroenterologist-recommendedmulti-strain probiotics brand.tDeveloped for people with seriousgastrointestinal conditions, it'strusted by healthcare professionalsand customers alike for its scientificfoundation, clinical credibility, andunwavering 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.
Why Doctors Trust VSL#3
VSL#3 Is Scientifically Formulated ForThe Dietary Management of IBS
Doctor Recommended
In a 2002 survey of gastroenterologists, 93% reported that IBS patients were satisfied with VSL#3.
The most frequently observed benefits:
- Less bloating
- Reduced pain
- Better stool consistency and frequency
- Overall symptom improvement
the Dietary Management of IBSClinically Studied and FODMAP Friendly Certified for
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.
VSL#3 Benefits:
A Clinically Studied Medical Food
VSL#3 is a medical-grade formulation supported by
clinical research.
Ultra-High Potency, Guaranteed
Contains 112.5 billion live bacteria (CFU) per capsule- an ultra-high-potency formula designed to keep itslabeled potency through expiration when stored underrecommended conditions.
Multi-Strain
8 complementary strains from 3 different genera.
Low FODMAP certified andclinically studied for thedietary management of IBS.
In a 2021 clinical study, VSL#3 demonstrateddietary management outcomes in people withIBS that were comparable to those observedwith a low FODMAP diet
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





