Immunocal: Clinically Proven Glutathione Boost I Immunotec Immunotec Glutathione vs. NAC: An Expert Comparison of Antioxidants Transparent Labs Glutathione deficiencies were frequently seen in the sickest patients during the pandemic. This explains why individuals with poor diets, obesity or compromised gut health were more likely to have worse disease. # nac # 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