Key Differences
VSL#3® is a refrigerated, high-potency probiotic medical food intended for the dietary management of IBS, ulcerative colitis, and pouchitis. It is the #1 gastroenterologist-recommended multi-strain probiotics brand.†
VSL4™ Gut is a shelf-stable probiotic supplement scientifically formulated to support regularity and healthy digestion.*
VSL#3®
Intended for the dietary management of IBS, UC, and pouchitis
![](http://www.vsl3.com/cdn/shop/t/171/assets/placeholder_10x12_crop_left.png?v=1593909494867914621721237621
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VSL4™ Gut
Promotes regularity and healthy digestion*
![](http://www.vsl3.com/cdn/shop/t/171/assets/placeholder_10x13_crop_left.png?v=1593909494867914621721237621
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VSL#3®
Intended for the dietary management of IBS, UC, and pouchitis
![](http://www.vsl3.com/cdn/shop/t/171/assets/placeholder_10x12_crop_left.png?v=1593909494867914621721237621
)
VSL4™ Gut
Promotes regularity and healthy digestion*
![](http://www.vsl3.com/cdn/shop/t/171/assets/placeholder_10x13_crop_left.png?v=1593909494867914621721237621
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A diverse gut microbiome may lead to better gut health.*
While VSL#3® and VSL4™ Gut are intended for different purposes, they both feature the same well-researched eight strains.
![](http://www.vsl3.com/cdn/shop/t/171/assets/placeholder.png?v=1593909494867914621721237621)