Dr. Mercola Complete Probiotics 70 Billion CFUDr. Mercola Complete Probiotics 70 Billion CFU Good health starts in the gut. So one easy way to level up your wellness routine is with a probiotic like Dr. Mercola Complete Probiotics 70 Billion CFU! Your digestive tract is in charge of breaking down food and absorbing nutrients and thats just the beginning! Imagine that your GI tract is a garden. You want to use rich soil, freshwater, and sunshine (like probiotics and good gut bacteria) to help it