Acidophilus Ultra + features the same 11 scientifically researched probiotic species found in our popular Acidophilus Ultra formula, but with 15 billion live, active cells! That’s 36% more colony-forming units (CFUs), fully protected by our natural, water-based GPS™ enteric coating. Each strain delivers its own unique, species-specific benefits and contributes to a healthy intestinal flora, suitable for adults and teens.