An exclusive formula - Carefully developed with the intent to promote intestinal and digestive health, Bio-K+ probiotic capsule supplements are available in a wide array of potencies. Our unique formula contains bacteria of human origin that can also be found naturally in the gut, thus supporting a healthy and balanced intestinal flora to support overall health and wellbeing. Bio-K+ Mild 12.5 billion is a great option for people new to probiotics or that tend to experience constipation more easily.