Catabolism of extracellular glutathione supplies cysteine to support tumours Nature Glutathione and phytochelatins jointly allow intracellular and extracellular detoxification of cadmium in the liverwort Marchantia polymorpha ScienceDirect Glutathione is often called the body's master antioxidant for a reason It plays a central role in protecting cells from oxidative stress, supporting detoxification pathways, and maintaining immune function. As levels Systemic Formulas GCEL Intracellular Glutathione 120 count Liberation Chiropractic & Wellness Glutathione (GSH) Intracellular Antioxidant, Liver Support