The appeal of glutathione injections makes sense. Glutathione is one of the most important antioxidants your body produces, and levels drop as you age, making the idea of a quick boost tempting. FDA highlights concerns with using dietary ingredient glutathione to compound sterile injectables FDA Carbamide Forte Japanese Reduced L Glutathione 500mg Tablets Toxicity of Glutathione Binding Metals: A Review of Targets and Mechanisms