Natural remedy
Selenium
Evidence grade B · No traditional recordBest-studied supplement in Graves', especially for mild thyroid eye disease
Why it may be relevant
Selenium is the most-studied supplement in Graves', and it's especially relevant early on. A double-blind, placebo-controlled trial in people with mild Graves' eye disease (thyroid eye disease) found a 6-month course improved quality of life and eased eye involvement, making it a reasonable foundational option to discuss with your doctor.
Selenium is an antioxidant that supports thyroid tissue. In mild thyroid eye disease, a controlled trial found it improved comfort and quality of life. It's worth being realistic about its limits, though: a large trial in newly diagnosed Graves' found selenium did not improve the chance of the overactive thyroid settling into remission. Think of it as supportive, and always alongside standard care rather than in place of it.
Dose or use 100–200 mcg daily (as selenomethionine); consult a healthcare practitioner for your specific dose.
Key study Randomized Controlled Trial (2011, PMID 21591944): 'Selenium and the course of mild Graves' orbitopathy' — a double-blind, placebo-controlled trial in 159 people with mild thyroid eye disease found a 6-month course of selenium improved quality of life and slowed eye-disease progression versus placebo. Note that a separate large trial found no benefit for hyperthyroidism remission, so selenium is best seen as support for mild eye disease alongside standard care, not a way to control the overactive thyroid itself.