Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD
Selenium
MODERATE EVIDENCEMineralLast updated
AVELOR SUMMARY
Essential for glutathione peroxidase and thyroid hormone conversion (T4→T3). 200μg/day reduced thyroid antibodies by 40% in Hashimoto's. Selenomethionine is best form. DO NOT exceed 400μg/day — toxic (selenosis causes hair/nail loss, GI issues). Brazil nuts: ONE nut = 70-90μg selenium.
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*Reviewed by the Dose AI Research Team and Clinical Advisory Board*
*Last updated: 2026-04-06*
Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.