VSL#3. POWERFUL PROBIOTICS: VSL#3 112.5B capsules are a probiotic medical food intended for the dietary management of Irritable Bowel Syndrome (IBS). DOCTOR RECOMMENDED: VSL#3 is the #1 Multi-Strain Probiotic Brand recommended by Gastroenterologists. HIGH POTENCY: VSL#3 112.5 Billion capsules contain over 100 Billion CFU, significantly more good bacteria than many OTC products. BACTERIA DIVERSITY: VSL#3 probiotics contain 8 complementary strains from 3 genera. Many OTC brands only have 1 strain. VIABILITY GUARANTEED: VSL#3 is stored and shipped under refrigerated conditions to ensure optimal viability.