Functions as a cofactor for glutathione peroxidase, neutralizing free radicals and regulating immune responses. Supports thyroid hormone conversion (T4 to T3).
Used in autoimmune thyroid disorders, fertility support, cardiovascular health, immune resilience, and cancer prevention protocols.
Not traditionally used as an herb, but selenium-rich soils were historically linked to better health and fertility in grazing populations.
Available in capsule, tablet, and liquid mineral forms; commonly paired with zinc and vitamin E in antioxidant formulas.
High-dose supplementation can cause toxicity; avoid in individuals with selenium sensitivity or Wilson’s disease.
May interact with chemotherapy agents, statins, and immunosuppressants.
