BCCT plans to write a summary on selenium. While our summary is in development, you can visit these sites:

Clinical Practice Guidelines

The Society for Integrative Oncology’s 2009 clinical practice guidelines found insufficient evidence to recommend selenium for improving side effects of chemotherapy, radiotherapy or surgery, quality of life or lymphedema.1


The Moss Reports list the availability, names  and costs of some selenium supplements. Moss Reports (purchase required).


Both About Herbs and CAM-Cancer list adverse reactions, herb-drug interactions and contraindications for selenium.  Read the summaries for more information. About Herbs: Selenium and CAM-Cancer: Selenium—during cancer treatment.

Selenium toxicity, more so from supplements than from dietary sources,  can be serious, so careful attention is needed about doses and the length of time you take selenium. Doses are in micrograms (μg), not milligrams (mg). A microgram is 1/1000 of a milligram. 

According to CAM-Cancer, selenium supplementation may increase the risk of non-melanoma skin cancer recurrence, especially in fair-skinned people.


BCCT does not recommend therapies or doses, but only provides information for patients and providers to consider as part of a complete treatment plan. Patients should discuss therapies with their physicians, as contraindications, interactions and side effects must be evaluated.

Dosage recommendations are available from these sources:

Integrative Plans, Protocols and Medical Systems

For more information about plans and protocols, see our Integrative Plans and Protocols page.
  • Plans, protocols and programs
    • Abrams & Weil integrative medicine approaches2
      • Chapter 22 : Prostate cancer
      • Chapter 24:  Lung cancer
    • Alschuler & Gazella complementary approaches3
      • Osteosarcoma
      • Liver cancer
      • Pancreatic cancer
      • Anti-inflammatory
      • Antioxidant
    • Block program4
      • Core diet plan
      • Antioxidant
      • Terrain modifier (when deficient)
      • Combination immune support supplement
      • Radiation enteritis
    • Chang strategies for cancer risk reduction5
      • Risk reduction
    • Lemole, Mehta & McKee protocols6
      • Part of the whole foods diet
      • Thyroid cancer
    • McKinney protocols7
      • Natural protectant for radiation therapy injury
      • Leukopenia
      • Natural targeted agent to activate mitochondria
      • Leading remedy for integrative cancer care to repair DNA damage and support thyroid hormone activation
      • Esophageal cancer
    • Ornish Lifestyle Medicine
      • Prostate cancer

View All References

More Information

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