Doctor's Best Digestive Probiotic supplies three stains of Bifidobacterium and three strains of Lactobacillus probiotics, all of which are proven benefits for digestive and whole-body health. Scientific studies have shown that ingestion of these specific strains of friendly bacteria supports several physiological functions, particularly the body's natural immune system and general intestinal well-being. The probiotic strains found in Doctor's Best Digestive Probiotic at the potency of 20 Billion Colony Forming Units (CFU) help support gastrointestinal tract function and digestive health. Digestive Probiotic with Howaru probiotics: Helps support balanced intestinal flora Helps support digestive and bowel regularity Helps support overall intestinal health