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.
A Gold Standard in Probiotics
- A powerful probiotic medical food
- The #1 gastroenterologist-recommended multi-strain probiotics brand†
- Ultra-high-potency — guaranteed through expiration when stored as recommended.
- 8 complementary probiotic strains from 3 different genera.
- Used in clinical practice and supported by clinical and scientific research.
Science Over Hype.Purpose Over Promises.
Built on the legacy of VSL#3®— a probiotic trusted by healthcare professionals and recognized for its scientific rigor — VSL® Probiotics continues to advance microbiome science through targeted, high-quality formulations that support both clinical dietary management and everyday wellness.
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Committed to Potency
Potent probiotic formulations guaranteed tomaintain labeled CFU counts throughexpiration.
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Designed for Viability
Carefully designed fofmulations that helpsafeguard live bacteria from production todelivery.
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Science-Led Strain Selection
Thoughtfully formulated with complementaryprobiotic strains chosen for function andpurpose.
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A Legacy of Expertise
A probiotic heritage recognized for itsconsistency, credibility, and professiona!trust.
What Our Customers Say
Clean Ingredients. Trusted Standards.
We believe what's not in your probiotic is just as important as what is.
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Dairy-Free
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Gluten-Free
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No GMOs
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Soy-Free
The VSL@ Probiotics Difference
Medical Foods & Supplements
From medical foods formulated forthe dietary management of Glconditions to supplements for dailywellness, VSL® Probiotics is made tothe highest standards of quality andconsistency
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 strainsand combinations supported bypublished research and guided bymicrobiome science.
Trusted by Professionals
Rooted in the heritage of VSL#3®_a probiotic trusted by healthcareprofessionals-VSL@ Probioticscarries that same dedication toquality and research into every new
formulation.
Why Doctors Trust VSL#3®
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.
It’s What’s on the Inside
Our unique8-strain formulationis designed so each strain complements the others, helping maintain a balanced gut microbiota. Billions of live, beneficial bacteria work together to support digestive health.
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Bifidobacterium
Bifidobacterium breve,Bifidobacterium lactis(previously classified as B.infantis), Bifidobacterium lactis(previously classified as B.
longum) -
Lactobacillus
Lactobacillus acidophilus,Lactobacillus helveticus(previously classified as L.delbrueckii subsp. bulgaricus),Lactobacillus paracasei,Lactobacillus plantarum
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Streptococcus
Streptococcus thermophilus
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
Shipped Cold for Maximum Potency
VSL#3® is shipped cold from our facility to your door to help preserve potency and ensure live probiotics arrive active and effective. Every order is packaged in recyclable, insulated materials with reusable ice packs to maintain optimal temperature control and reduce waste.
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Refrigerated Supply Chain:
Cold from production to delivery.
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ClimaCell® Packaging:
Sustainably insulated and 100% curbside recyclable.
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Strain Potency Preserved:
Live probiotics that stay active through expiration when stored as directed.
