Moderate-level maintenance probiotic • Provides 15 billion CFU per dose • No FOS 16 probiotic strains • Includes proprietary human-sourced strains Supports a healthy normal digestive flora • Provides live microorganisms that temporarily modify gut flora HMF Multi Strain is a moderate-level, long-term maintenance probiotic formula which provides sixteen strains including proprietary human-sourced Lactobacillus acidophilus, Bifidobacterium bifidum and Bifidobacterium animalis subsp. lactis. The capsules are 100% pure vegetable-sourced which makes the product ideal for vegans.