Selenium
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Selenium
An essential trace mineral that supports thyroid health, optimal immune function, and healthy aging* Selenium supports the body’s natural antioxidant capabilities and promotes healthy endocrine and immune function, with benefits for cellular energy levels, metabolism, mood, and healthy hair and skin.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| SeleniumL-Selenomethionine | 200 mcg |
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule
Recommended Use
Take 1 capsule daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING: This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY WARNING: If pregnant, consult your health-care practitioner before using this product. INTERACTIONS: There are no known adverse interactions or contraindications at publication date.
Frequently Asked Questions
What is Thorne Selenium's Formulate score?
Thorne Selenium scores 98 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Selenium worth it?
Thorne Selenium scores 98/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Selenium?
Each serving contains Selenium (200 mcg). Serving size: 1 Capsule. 60 servings per container.
How do I take selenium?
Take 1 capsule daily or as recommended by your health-care practitioner.
Who makes Selenium?
Selenium is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Selenium third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Made in USA, Third-Party Contents Certified, Thorne Verified, GMP Certified.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.