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Mineral

Selenium-Enriched Yeast

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Selenium-Enriched Yeast. Yeast-bound selenomethionine — form used in major chemoprevention trials.

How it works. Selenomethionine incorporated into proteins and slowly released as needed.

What the research supports. 1 graded claims. Strongest: Reduces anti-TPO antibodies in Hashimoto's (strong).

How much to take. Typical dose: 100–200 mcg.

Side effects and interactions. 1 medication interaction listed. Serious: Selenosis >400 mcg long-term.

Stacking. Pairs well with Vitamin D3 + K2, Zinc, NAD+ precursor (NMN or NR).

Common forms. Available as Chelated form (glycinate, bisglycinate, citrate, malate), Inorganic salt (oxide, sulfate, chloride), Liquid ionic solution, Topical or transdermal preparation.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Selenium-Enriched Yeast. Anecdotes are not medical advice.

Selenium-Enriched Yeast. Yeast-bound selenomethionine — form used in major chemoprevention trials.

Element Se · Z = 34

What it is

Yeast-bound selenomethionine — form used in major chemoprevention trials.

Food sources

Whole foods (leafy greens, legumes, nuts, seeds, seafood, animal proteins)Fortified foods such as cereals, breads, plant milks, and table saltMineral supplements as chelates, citrates, glycinates, or inorganic salts

Goals

Thyroid SupportImmune FunctionHealthy Aging

How it works

Selenomethionine incorporated into proteins and slowly released as needed.

Pathways

  • Selenomethionine incorporated into proteins
  • slowly released as needed

Effects

  • ↓anti-TPO antibodies in Hashimoto's decreases

What the research supports

Reduces anti-TPO antibodies in Hashimoto'sstrong

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
100–200 mcg
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith meals
Best formMost evidence is based on the chelated form (glycinate, bisglycinate, citrate, malate) form.
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Side effects & interactions

Serious

  • Selenosis >400 mcg long-term

Medication interactions

Prescription medications (general)minor

Always disclose Selenium-Enriched Yeast use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Vitamin D3 + K2Foundational immune modulation.
  • ZincRequired cofactor for innate and adaptive immune function.
  • NAD+ precursor (NMN or NR)Complementary mitochondrial and sirtuin support.

Common forms

  • Chelated form (glycinate, bisglycinate, citrate, malate)
  • Inorganic salt (oxide, sulfate, chloride)
  • Liquid ionic solution
  • Topical or transdermal preparation

Key studies

8 studies cited in total.

PubMed: Selenium-Enriched Yeast — Reduces anti-TPO antibodies in Hashimoto's ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Selenium-Enriched Yeast and "Reduces anti-TPO antibodies in Hashimoto's". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Selenium-Enriched Yeast — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Selenium-Enriched Yeast and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Selenium-Enriched Yeast — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Selenium-Enriched Yeast and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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