Soil-Based Probiotic is a powerful, hypoallergenic blend of genetically certified Bacillus coagulans and B. subtilis species formulated to provide unique probiotic support of healthy gastrointestinal and immune function. * - Soil-Based Probiotic is recommended for enhanced support ...Soil-Based Probiotic is a powerful, hypoallergenic blend of genetically certified Bacillus coagulans and B.