Irritable Bowel Syndrome (IBS) poses a daily challenge for millions of people around the world, impacting individuals of all ages and genders with symptoms that range widely in severity and effect. In recent years, research has highlighted the potential benefits of probiotics for managing IBS.
Developed by Gnosis by Lesaffre, ibSium® is a patented probiotic yeast registered as Saccharomyces cerevisiae CNCM I-3856. Recognized as a reference probiotic strain, ibSium® has demonstrated its effectiveness in several rigorous clinical studies, showing that this yeast can significantly relieve gastrointestinal symptoms and improve overall quality of life.
Watch the video to explore the key benefits of ibSium® for digestive health
Our Probiotic Yeasts Range

Lynside® S. boulardii
Biotics
Probiotic Yeast:Doctors and gastroenterologists know its high efficacy and prescribe it for decades to reduce occasional diarrhea and restore gastrointestinal flora.
Digestion & Gut
Wellness & Immune
Microbiome Balance
Diarrhea Management
Immunity

ibSium®
Biotics
Probiotic Yeast: ibSium® (Saccharomyces cerevisiae CNCM I-3856) is a probiotic yeast clinically proven to support overall intestinal comfort, with more than 96% of consumers reporting a significant improvement of gut comfort.
Digestion & Gut
Diarrhea Management
Digestive Comfort
Microbiome Balance

Quatreflora™
Biotics
Probiotic Yeast: A new probiotic approach for women’s intimate health concerns, produced from a patented strain of Saccharomyces cerevisiae CNCM I-3856. Quatreflora™ is a probiotic yeast that balances and optimizes vaginal flora and protects against bacterial and yeast vaginosis.
Reproduction & Women’s
Vaginal Care
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