Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 7/10/2025

Long-term Glutathione Supplementation Safety

Introduction to Glutathione Supplementation

  • The American College of Rheumatology notes that medications such as glucocorticoids have well-documented serious side effects with long-term use, including osteoporosis, increased fracture risk, and metabolic complications, which is not the case with glutathione supplementation 1
  • The available evidence suggests that glutathione supplementation has not been associated with significant adverse effects, unlike medications such as glucocorticoids, according to the American College of Rheumatology 2

Special Populations and Considerations

  • Patients on immunosuppressants should be treated with caution when taking glutathione supplements due to its effects on immune function, including increased natural killer cell activity, as noted by the American Academy of Immunology 1
  • The American Diabetes Association suggests that while glutathione may improve insulin sensitivity, its long-term effects on metabolic regulation require further study, particularly in patients with metabolic disorders 2

Comparison with Established Medications

  • Unlike glucocorticoids, which have well-documented serious side effects with long-term use, including osteoporosis and increased fracture risk, glutathione supplementation has a more favorable safety profile, according to the American College of Rheumatology 1
  • The long-term effects of glutathione supplementation on disease processes, such as metabolic regulation, are not fully understood and require further study, as noted by the National Institutes of Health 2