Seleno Met (Selenium) 200mcg, 100 Capsules
Seleno Met by Klaire Labs/SFI Health delivers 200 mcg of selenium as L-selenomethionine, an organically bound form that mirrors how selenium occurs naturally in food and supports superior retention compared to inorganic selenium salts.
May be a fit for
- Adults seeking selenomethionine support for healthy thyroid hormone metabolism
- Practitioners protocols requiring organic selenium in highly bioavailable amino acid form
- Individuals supporting antioxidant defenses with 200mcg selenomethionine daily
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Seleno Met by Klaire Labs/SFI Health delivers 200 mcg of selenium as L-selenomethionine, an organically bound form that mirrors how selenium occurs naturally in food and supports superior retention compared to inorganic selenium salts. This trace mineral plays a key role in antioxidant enzyme function, thyroid hormone metabolism, and immune system support. It's well-suited for individuals seeking a clean, bioavailable selenium option.
Why It's Worth Considering: Klaire Labs formulates to practitioner standards with minimal excipients, and L-selenomethionine is among the most researched forms for tissue incorporation and steady-state plasma levels.
Klaire Labs/SFI Health · 100 CapsulesMake it part of your routine.
Adults: 1 capsule daily or as directed by a healthcare professional.
Children: As directed by a healthcare professional. Not to be consumed by those under age 14.
Product details
Supplement facts & complete label
Serving Size:
1 Capsule
Amount Per Serving:
Selenium (as L-selenomethionine) ... 200 mcg
Other Ingredients:
Microcrystalline cellulose, vegetarian capsule (hydroxypropyl methylcellulose, water), and L-leucine.
Made without common allergens | Non-GMO | Vegan
No synthetic colors, flavors, or preservatives
CAUTION: Consult with your physician if you are pregnant or nursing, or have any medical condition, or taking prescription drugs, or under the age of 18 years.
KEEP OUT OF REACH OF CHILDREN.
Label directions
Adults: 1 capsule daily or as directed by a healthcare professional.
Children: As directed by a healthcare professional. Not to be consumed by those under age 14.
Source: authorized supplier catalog · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking selenomethionine support for healthy thyroid hormone metabolism
- Practitioners protocols requiring organic selenium in highly bioavailable amino acid form
- Individuals supporting antioxidant defenses with 200mcg selenomethionine daily
- Those with dietary gaps in selenium from low-selenite soil region diets
Considerations
- Already consuming high-selenium foods daily (Brazil nuts)
- Doses above 400mcg/day (selenosis risk)
- Non-melanoma skin cancer history (some concern with high-dose Se)
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
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A few useful answers.
Research & further reading
More category questions
How much selenium should I take?
For maintenance: 100-200mcg daily (selenomethionine form preferred). For thyroid support: 200mcg. The RDA is 55mcg but most functional medicine practitioners recommend 100-200mcg. Do NOT exceed 400mcg/day — selenium has a narrow therapeutic window and excess causes selenosis (hair loss, nail brittleness, GI issues).
Is selenium good for thyroid?
Yes — selenium is critical for thyroid function. It's required for the enzyme that converts inactive T4 to active T3, AND it protects thyroid cells from oxidative damage. In Hashimoto's, 200mcg selenium daily reduces TPO antibodies by 20-40% in clinical trials. It's one of the most evidence-based supplements for thyroid health.
Can I just eat Brazil nuts instead?
One Brazil nut contains 70-90mcg selenium — so 2 nuts/day provides a therapeutic dose. However, selenium content varies dramatically by soil (some nuts have 10mcg, others have 300mcg). If you rely on Brazil nuts, be cautious about overconsumption — 4-5 large nuts could exceed 400mcg. A supplement provides a consistent, known dose.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.