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Selenium Supplement – 200 mcg of Selenium for powerful antioxidant support, helping promote immune function, thyroid health, and healthy aging. Third-Party Certified for quality and purity. - Daily Defense
Selenium Supplement – 200 mcg of Selenium for powerful antioxidant support, helping promote immune function, thyroid health, and healthy aging. Third-Party Certified for quality and purity. - Daily Defense
Selenium Supplement – 200 mcg of Selenium for powerful antioxidant support, helping promote immune function, thyroid health, and healthy aging. Third-Party Certified for quality and purity. - Daily Defense
Selenium Supplement – 200 mcg of Selenium for powerful antioxidant support, helping promote immune function, thyroid health, and healthy aging. Third-Party Certified for quality and purity. - Daily Defense

Selenium 200 mcg | L-Selenomethionine | Daily Defense®

$19.95

Selenium 200 mcg — L-Selenomethionine for Antioxidant & Thyroid Support

Selenium is an essential trace mineral that plays a foundational role in antioxidant defense, thyroid function, and immune health.* Daily Defense® Selenium delivers 200 mcg of Selenium as L-selenomethionine — the organic, highly bioavailable form — in a single vegetable capsule. Formulated in the USA. 100 capsules per bottle.

What’s Inside

  • Selenium (as L-selenomethionine) — 200 mcg (364% DV) — L-selenomethionine is the organic, amino acid-bound form of selenium, recognized for its superior bioavailability compared to inorganic selenium forms. It is the preferred form for supplementation and the most studied in clinical research.*

How It Works

Selenium functions as a critical component of selenoproteins — a family of proteins that play key roles in antioxidant defense, thyroid hormone metabolism, and immune function.* As a cofactor for glutathione peroxidase, one of the body’s primary antioxidant enzymes, selenium helps protect cells from oxidative damage caused by free radicals.* Selenium is also essential for the conversion of thyroid hormone T4 to its active form T3, making adequate selenium intake important for healthy thyroid function and metabolic regulation.*

L-selenomethionine is incorporated into body proteins in place of methionine, allowing the body to build a natural selenium reserve that can be drawn upon as needed — making it an efficient and well-tolerated supplemental form.*

What It Supports

  • Antioxidant defense against oxidative stress*
  • Healthy thyroid function and hormone metabolism*
  • Immune system function*
  • Healthy cellular function*
  • Overall foundational mineral nutrition*

Who Is This For?

Daily Defense® Selenium is designed for adults looking to support antioxidant defense, thyroid health, and immune function with a highly bioavailable selenium supplement. It may be a good fit if you:

  • Want to support healthy thyroid function and hormone metabolism as part of a daily wellness routine*
  • Are looking for antioxidant support at the cellular level*
  • Prefer L-selenomethionine — the most bioavailable form of selenium
  • Want a clean, single-ingredient selenium supplement in a vegetable capsule

How to Use

Take 1 vegetable capsule daily, preferably with a meal, or as directed by a healthcare professional. Each bottle contains 100 capsules — a 100-day supply at the recommended serving size. Do not exceed the recommended dose.

Quality You Can Trust

Daily Defense® is committed to delivering supplements that meet the highest standards of quality and purity. Selenium 200 mcg is formulated in the USA, produced in a GMP-certified facility, and third-party tested to help ensure the quality and integrity of every bottle.


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All DAILY DEFENSE® products are:

  • manufactured in the USA
  • in FDA-registered and approved facilities
  • under Good Manufacturing Practices (GMP) guidelines
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Selenium 200 mcg | L-Selenomethionine | Daily Defense®

$19.95
FAQ

How soon will I see the benefits?

Results may vary depending on the individual and the specific supplement. While some individuals may experience benefits within a few weeks, others may require longer. Consistency is key for best results.

Where are supplements made?

All our supplements are formulated in the USA under Good Manufacturing Practices (GMP) guidelines and in FDA-registered and approved facilities.

Can I take with other meds?

We always recommend consulting with your healthcare provider before taking any new supplements, especially if you are currently on prescription medication, have a medical condition, pregnant or nursing.

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Get In touch

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Please email orders@mydailydefense.com.

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DAILY DEFENSE® was developed to help support your body’s nutritional needs across multiple vital areas of health, including immunity, skin health, digestive health, energy, hormonal and neural support, as well as healthy aging and much more.

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All DAILY DEFENSE® products are manufactured in the USA under Good Manufacturing Practices (GMP) guidelines and in FDA-registered and approved facilities. Our chemists utilize the latest technology, cutting-edge scientific research, and advanced formulas.

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