N acetylcysteine enhances muscle cysteine and glutathione availability and attenuates fatigue during prolonged exercise in endurance trained individuals Journal of Applied Physiology American Physiological Society Glutathione Injections: Enhance Results with Combination Therapy Did you know your body makes its own powerful antioxidant? Glutathione is known as the master antioxidant because it helps protect your body from damage, supports your immune system, and even Elevated phospholipid hydroperoxide glutathione peroxidase (GPX4) expression modulates oxylipin formation and inhibits age related skeletal muscle atrophy and weakness ScienceDirect