For Every Day EXTRA Strength is a premium product containing 20 billion live microorganisms per daily dose, with 5 probiotic strains; including the extensively studied L. acidophilus NCFM. A healthy balance of probiotics in the body is important for promoting normal digestive health, and energy levels and supporting natural immune defenses. Amongst other things, probiotics can help to replenish the good bacteria in the gut during and after a course of antibiotics. Probiotics can also be taken daily by those looking for a healthy balance of good intestinal bacteria.