Henry Blooms SB Probiotic Gut Health 30 vegetarian capsules supports healthy digestive system function and healthy immune system function with no refrigeration required. Henry Blooms SB Probiotic Gut Health works differently from other probiotics. It remains intact as it enters the digestive tract as it is resistant to stomach acidity and proteolysis, and there is no loss of activity due to heat or cold. This makes Henry Blooms SB Probiotic a highly stable digestive support supplement that can quickly target the gut wall to re-establish microflora and bring about digestive balance.