This high quality supplement from Optibac is pure Saccharomyces boulardii. Each capsule provides 5 billion CFU of pure Saccharomyces boulardii, clinically trialled to complement the natural gut bacteria. In clinical trials S boulardii has been shown to survive stomach acidity and reach the gut alive, making it most suitable to complement the natural gut bacteria and support digestive health. Saccharomyces boulardii is an internationally acclaimed friendly yeast and has been used safely for over 50 years. This is a travel friendly product as it has no need for refrigeration, even in hot, humid environments - you can take this easy-to-swallow supplement with you wherever you go. Can be taken short term or over a longer period. This product is suitable from 1 year onwards and contains a 16-day supply of pure Saccharomyces boulardii capsules.