MTHFRHOMOCYSTEINE and GLUTATHIONE People with the MTHFR C677T variant tend to have: *elevated Homocysteine *Red Blood Cells that are a bit too large HOMOCYSTEINE: But, there are other reasons why HOMOCYSTEINE may Deficient synthesis of glutathione underlies oxidative stress in aging and can be corrected by dietary cysteine and glycine supplementation1234 The American Journal of Clinical Nutrition G 6 PD The Disorder Glucose 6 phosphate dehydrogenase (G6PD): Response of the human erythrocyte and another cells to the decrease in their activity Glutathione Injection Side Effects: Common Reactions and How to Manage Them Glutathione Injections Skin Whitening Glutathione IV Treatment