iFlora Nasal Health is a patent-pending formula combining the power of probiotics and the sinus support of NAC for nasal and bronchial health. This specific probiotic formula featuring 22 billion cells per serving that exhibits positive effects on normal flora and nasal sinus health. Maintaining healthy levels of flora supports a healthy immune response and crowds out undesirable invaders. NAC exerts antioxidant effects and exhibits positive effects on detoxification, sinus, bronchial, and upper respiratory health. NAC is also the precursor of the body's most important natural antioxidant, glutathione, which gives its beneficial effects on immune, cellular and respiratory health.