I absolutely love NAC (N Acetyl Cysteine) for so many reasons! Not only is it fantastic for upper respiratory issues, but it also plays a crucial role in promoting glutathione, which is known as the Millions of satisfied customers can't be wrong Immunocal: the most trusted name in #ImmuneHealth and we've got the numbers to prove it. # Immunotec #Immunocal #Immunesupport #ChampionHealth #UnlockYourPotential . Did you know Immunocal Lung glutathione adaptive responses to cigarette smoke exposure Respiratory Research Springer Nature Link Skin Care Ingredients to Avoid During Pregnancy