Selenium 60 caps Thorne Research
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✅ Individuals who want to boost their body's defenses, especially during periods of exertion or environmental exposure.
✅ Individuals seeking antioxidant support to protect cells from oxidative damage.
✅ Those who want to promote healthy hair, strong nails, or maintain normal thyroid function.

Thorne Selenium as L-Selenomethionine for Thyroid, Immunity and Cellular Balance — Thorne
Thorne Selenium is a selenium supplement in the form of L-selenomethionine, providing 200 mcg per capsule, in a two-ingredient formula of extreme purity. It may make sense for those who want to support normal thyroid function, the immune system, cell protection, and antioxidant balance as part of a daily routine.
Selenium is an essential trace mineral that the body cannot produce on its own — it must be obtained through food or supplementation. With soils increasingly poor in selenium in much of Europe, ensuring an adequate intake of this mineral through diet is becoming increasingly difficult. Thorne's Selenium — previously marketed as Selenomethionine — provides 200 mcg of selenium in the form of L-selenomethionine per capsule, an amino acid form with an excellent integration profile by the body. With just two ingredients — selenium and microcrystalline cellulose — in a gluten-free, soy-free, and dairy-free vegetable capsule, it can be easily integrated into any daily wellness routine.
✅ May contribute to protecting cells against oxidative stress (antioxidant action).
✅ May support the normal functioning of the immune system.
✅ Essential for normal thyroid function – support in the production of T3 and T4 hormones.
✅ Organic form of selenium (selenomethionine) with high absorption.
✅ Gluten-free, lactose-free, soy-free – ideal for food sensitivities.
✅ High-purity and pharmaceutical-grade Thorne capsules.
The only active ingredient is selenium in the form of L-selenomethionine, providing 200 mcg of elemental selenium per capsule — 364% of the daily reference intake (NRV of 55 mcg). Selenomethionine is the organic form of selenium found naturally in plant and animal foods, bound to the amino acid methionine. It is widely recognized as one of the forms of selenium with the best retention profile by the body. Selenium is an essential cofactor of various selenoproteins — including glutathione peroxidases and thioredoxin reductases — which are part of the body's natural antioxidant systems. It is also indispensable for the conversion of the thyroid hormone T4 into its biologically active form T3, and for the normal functioning of the immune system. The formula contains only two ingredients: selenium as L-selenomethionine and microcrystalline cellulose, in a vegetable hypromellose capsule. No additional excipients, no preservatives, no artificial flavors or colors.
Selenium (as L-selenomethionine), 200 µg/**
Ingredients:Microcrystalline cellulose (filler), hypromellose capsule (cellulose), L-selenomethionine
1 Capsule daily
* NRV — Nutrient Reference Value.
** NRV not established.
💊 Food supplements are not a substitute for a varied and balanced diet or a healthy lifestyle.
🤰 If pregnant or breastfeeding, consult your doctor before taking this supplement.
⚠️ Not recommended in cases of hypersensitivity or allergy to any of the ingredients, or when interactions between another product and any of its constituents have been described.
🕐 Do not exceed the recommended daily dose. Keep out of reach and sight of children.
🌡️ Store in a cool, dry place, away from light.
FAQs
Thorne's Selenium is a selenium supplement in the form of L-selenomethionine that can contribute to normal thyroid function, the immune system, cell protection against oxidative stress, the maintenance of hair and nails, and the normal metabolism of iodine. It is especially relevant in regions with selenium-poor soils, where dietary intake may be insufficient.
It may be useful for those with selenium deficiency or suboptimal dietary intake, people with hypothyroidism or thyroid dysfunction (such as Hashimoto's thyroiditis), those who want to support the immune system and antioxidant balance, people with hair loss or brittle nails associated with mineral deficiencies, and those living in regions with selenium-poor soils (such as Portugal and much of Europe). Always in addition to medical follow-up.
Selenomethionine is the organic form of selenium, naturally present in foods, which the body recognises and retains more efficiently. Inorganic forms (sodium selenite and selenate) have lower organic retention. L-selenomethionine can be stored in muscle tissues and used more gradually, which makes it preferable for maintenance supplementation.