Glutathione: The Bodys Master Antioxidant, ., ., Glutathione (GSH) is often referred to by scientists and nutritionists as the "Master Antioxidant." Unlike other antioxidants like Vitamin C or E, NAC is a great supplement. It's awesome stuff to support healthy lungs. NAC is a known mucolytic. That is a fancy term meaning breaking up mucus. Now, research does show that NAC Glutathione Benefits, Uses and Best Practices Olympia Pharmacy Glutathione an overview ScienceDirect Topics