Selenium & Iodine Thyroid Support
Selenium (as selenomethionine) and iodine for thyroid hormone production, immune function, and antioxidant defence.
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Order dispatched, tracking info sent. Most customers take their first dose the day it arrives.
Research shows it takes ~14 days to anchor a new habit. By now, most customers have found their ideal time of day.
At 8 weeks, customers report the strongest improvements. Consistency is everything with nutritional supplements.
Over 90% of Medibro subscribers are still on the same product at 3 months — the clearest signal a supplement is working.
The thyroid gland requires both iodine (to synthesise thyroid hormones T3 and T4) and selenium (for the enzymes that activate and regulate those hormones). UK soils are selenium-depleted, and iodine deficiency is re-emerging due to falling dairy consumption.
Selenomethionine is the most bioavailable organic selenium form — not sodium selenite.
Benefits
- ✓Thyroid function
- ✓Immune defence
- ✓Antioxidant
- ✓Fertility
- ✓Metabolism
Complete your stack
✨What customers say
From 20 reviews★ 4.5Customers appreciate the combination of selenium and iodine for supporting thyroid health, particularly noting improvements in energy levels, TSH stability, and overall thyroid function.
Some users mention minor concerns about the difficulty of obtaining iodine from diet, particularly for those living inland, and a few would like more information on long-term use.
This product is best for individuals with thyroid issues, especially women and those diagnosed with conditions like Hashimoto's or subclinical hypothyroidism, who are looking for effective supplementation.
Customer reviews
- ★★★★☆Grace S.18/05/2026Good for women's thyroid health
Women are significantly more at risk of thyroid issues. This combination is proactive and evidence-based.
- ★★★★☆Freya Z.12/05/2026Worth it for thyroid health
I live inland away from seafood and iodine is genuinely difficult to get from diet. This combination is sensible.
- ★★★★★Jack N.04/05/2026Good thyroid stack
Selenium is essential for T4 to T3 conversion and iodine is needed for thyroid hormone synthesis. Both in one product is convenient.
- ★★★★★Ella U.01/05/2026Thyroid function improved
Subclinical hypothyroid and my endocrinologist suggested selenium and iodine supplementation. Fatigue has improved and TSH is more stable.
- ★★★★★Ella U.29/04/2026Thyroid function improved
Subclinical hypothyroid and my endocrinologist suggested selenium and iodine supplementation. Fatigue has improved and TSH is more stable.
- ★★★★☆Freya Z.17/04/2026Worth it for thyroid health
I live inland away from seafood and iodine is genuinely difficult to get from diet. This combination is sensible.
- ★★★★★Charlotte F.14/04/2026Thyroid function improved
Subclinical hypothyroid and my endocrinologist suggested selenium and iodine supplementation. Fatigue has improved and TSH is more stable.
- ★★★★★Christine B.Verified buyer14/04/2026GP surprised by improvement
Thyroid antibody count was high on annual test. Added this selenium + iodine stack. Next test showed significant reduction. GP asked which supplement I was taking and now recommends it to other Hashimoto's patients.
- ★★★★★Oscar Y.10/04/2026Good thyroid stack
Selenium is essential for T4 to T3 conversion and iodine is needed for thyroid hormone synthesis. Both in one product is convenient.
- ★★★★☆Grace S.09/04/2026Worth it for thyroid health
I live inland away from seafood and iodine is genuinely difficult to get from diet. This combination is sensible.
- ★★★★☆William L.08/04/2026Good for women's thyroid health
Women are significantly more at risk of thyroid issues. This combination is proactive and evidence-based.
- ★★★★☆Jenny P.Verified buyer25/03/2026TSH levels improving
Borderline hypothyroid on blood tests. GP agreed to try thyroid support supplementation before medication. After 4 months of selenium + iodine, TSH is trending toward normal. Will reassess at 6-month blood test.
- ★★★★★Oscar Y.21/03/2026Thyroid function improved
Subclinical hypothyroid and my endocrinologist suggested selenium and iodine supplementation. Fatigue has improved and TSH is more stable.
- ★★★★★Fiona K.Verified buyer14/03/2026Thyroid antibodies reduced
Hashimoto's thyroiditis confirmed. Endocrinologist specifically recommended selenium supplementation — the research on selenium reducing TPO antibodies in Hashimoto's is strong. After 6 months on this, antibody levels have reduced. Excellent formulation with both selenium and iodine.
- ★★★★☆Joshua E.26/02/2026Good for women's thyroid health
Women are significantly more at risk of thyroid issues. This combination is proactive and evidence-based.
- ★★★★☆Patricia W.20/02/2026Good quality thyroid support
The selenium selenomethionine form is the most bioavailable and is the form used in the Hashimoto's studies. Combined with potassium iodide. This is the correctly formulated thyroid support stack.
- ★★★★★James T.19/02/2026Good thyroid stack
Selenium is essential for T4 to T3 conversion and iodine is needed for thyroid hormone synthesis. Both in one product is convenient.
- ★★★★★Rebecca H.Verified buyer05/02/2026Energy returned, hair stopped falling
Hypothyroidism (subclinical) was causing fatigue and hair loss. Endocrinologist suggested selenium + iodine support alongside monitoring. After 3 months: energy returning, hair shedding reduced significantly. Proper doses, proper forms.
- ★★★★★Harry G.04/02/2026Good thyroid stack
Selenium is essential for T4 to T3 conversion and iodine is needed for thyroid hormone synthesis. Both in one product is convenient.
- ★★★★☆Sarah M.27/01/2026Worth it for thyroid health
I live inland away from seafood and iodine is genuinely difficult to get from diet. This combination is sensible.
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