Saccharomyces boulardii Probiotics

What makes S. boulardii different

Most probiotics are beneficial bacteria; Saccharomyces boulardii is a friendly yeast. That difference matters in two practical ways: it isn't affected by antibiotics the way bacterial probiotics can be, and it's hardy enough that most products are shelf-stable and don't need refrigeration. It's taken to support a balanced gut and everyday digestive comfort.

Why people take it, including for travel

S. boulardii is one of the most-researched probiotics for digestive support, and a common reason people look to it is to help support regularity and digestive comfort when things are off — including the digestive upset that can come with travelling to new places. It's popular as a travel companion for that reason; see also probiotics for travel. If digestive symptoms are severe, persistent, or come with fever or blood, that's one to see a healthcare provider about rather than manage with a supplement.

Potency and forms

S. boulardii is measured in CFU (colony-forming units), commonly from 5 to 10 billion per capsule. Most come as shelf-stable capsules, some delayed-release to help them survive the stomach. Follow the dose on the label.

Saccharomyces boulardii in Canada

S. boulardii supplements sold in Canada carry a Natural Product Number (NPN) from Health Canada and ship from our Ontario warehouse to addresses across Canada.

A note on S. boulardii

It's generally well tolerated, with mild gas or bloating possible at first. Because it's a live yeast, people who are seriously immunocompromised, critically ill, or have a central venous catheter should avoid it unless a doctor advises otherwise. If you're pregnant, breastfeeding, or managing a health condition, check with your healthcare provider first.