Clinically Studied Strains. Everyday Digestive Support.
From the makers of VSL#3®, the #1 gastroenterologist-recommended multi-strain probiotics brand, comes VSL4® Gut — a daily probiotic supplement designed to support digestive comfort, regularity, and overall gut wellness.*
Supports healthy digestion and regularity with 8 probiotic str
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161 ratings
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Ok so far.
Almost finished with my first bottle. On some days it seems to work wonderfully, but then other days just so-so or not much. I’m thinking whatever I’m eating or not drinking enough might play a role. I like these better than the vsl3 that I took before because the vsl4 does not need refrigeration. When I took vsl3 I stopped them to go on vacation and then didn’t resume for a while and I noticed a difference, that’s why I started taking the vsl4. All in all I think it makes the bowels a little softer with the right diet. One thing I noticed is some smelly gas when I eat sugary foods. It’s all a work in progress.
J
Joanna · September 21, 2026
VSL#4
Very good product and great customer service that always delivers your refill on time with no delay!!
M
Mark · October 22, 2026
Hooray
Reliably the best probiotics
Makes a huge difference for me