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Selenium 200 mcg

21st Century
4.8
★ ★ ★ ★ ★
(11106 ratings)
Selenium 200 mcg
Product Image
Score85
A focused 200 mcg selenium capsule using selenium yeast, with clear dosing but incomplete non-active ingredient details.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
General Health
Immunity

Score 85

A focused 200 mcg selenium capsule using selenium yeast, with clear dosing but incomplete non-active ingredient details.
How scoring works
$5.49($0.09 per serving)
Amazon
$ 9.00
Pure Formulas
$ 5.91
iHerb
$ 5.49
Report prices

Analysis

Selenium 200 mcg provides 200 mcg selenium as selenium yeast. The narrow formula makes its purpose and daily contribution easy to understand.

Yeast provides a useful selenium source, though its exact selenium compounds are not stated. The supplied details do not include non-active ingredients, so capsule or tablet suitability cannot be fully checked.

The capsule is economical for consistent use. The dose should still be considered alongside selenium from food and other supplements.

Who is it for
  • Adults intentionally adding selenium
  • People who prefer a capsule format
Best for
  • Targeted selenium intake
  • Simple supplement routines

Pros

  • Clearly states 200 mcg selenium
  • Uses selenium yeast
  • The capsule is economical for consistent use.

Cons

  • Non-active ingredients are not supplied
  • Narrow single-nutrient formula
  • Requires care when stacking supplements

Warnings

  • Count the 200 mcg selenium serving with multivitamins and other selenium products to avoid unnecessary excess.

Nutrient quality

90 Highest impact

A meaningful amount and food-form yeast support focused selenium intake. Unspecified selenium species limit form precision, while the formula remains filler-free.

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Ingredient transparency

81 Highest impact

The active amount and yeast source are disclosed without a hidden blend. Specific selenium compounds, explicit use directions, and non-active ingredients are absent.

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Customer satisfaction

73 High impact

The available rating is strong and the sample is very large. Detailed feedback was not supplied, so repeated complaints and alignment with the intended use remain uncertain.

.

Value for money

97 Highest impact

A meaningful amount and economical supply deliver strong practical value. Limited form precision is the only notable quality trade-off.

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Report analysis

Goals

General Health
General Health
Impact
Highest effect
A Goal FitA Strength of SupportC CoverageA+ Formula Quality
Selenium · 200 mcg

Selenium supports antioxidant enzymes, thyroid hormone metabolism, and normal immune function. Selenium yeast provides an organic food-form source at a substantial daily amount.

The focused capsule offers strong depth for one essential trace mineral but does not address other foundational pathways. Combining it with other high-selenium products can push chronic intake too high, which may lead to brittle nails, hair changes, or digestive symptoms.

Study evidence
Selenium Supportive 70 studies
Immunity
Immunity
Impact
Highest effect
B+ Goal FitA Strength of SupportC CoverageA+ Formula Quality
Selenium · 200 mcg

Selenium yeast provides focused support for antioxidant enzymes that help protect immune cells. The amount is substantial and the one-capsule format keeps the formula easy to assess.

Coverage is narrow, and the precise selenium compound within the yeast is not identified. It is best used to address selenium intake rather than as comprehensive immune support.

Study evidence
Selenium Mixed 37 studies

Ingredients

IngredientAmount per serving
Selenium (Selenium Yeast)
 200 mcg
Gluten Free Adults 18–50
Report overview
Selenium (Selenium Yeast) · 200 mcg OverallScore92
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Selenium yeast provides an organic food-form source at the standard daily target. The label identifies the yeast source but not a branded high-selenium yeast, so form precision is moderate. A wide safety margin and very low serving cost make it an efficient selenium option.

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Selenium 200 mcg

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<p>Its label clearly provides 200 mcg of Selenium as L-Se-Methylselenocysteine, keeping the formula relevant to selenium. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Associations of selenium status with all-cause and cause-specific mortality: a systematic review and meta-analysis of cohort studies.
    Cui Z; Xie R; Lu X; Schomburg L; Brenner H; Schöttker B · Redox biology · 2025
    Meta-analysis95 participants20 studies pooledGeneral Health forSelenium
  2. Dietary Antioxidants, Circulating Antioxidant Concentrations, Total Antioxidant Capacity, and Risk of All-Cause Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Observational Studies.
    Jayedi A; Rashidy-Pour A; Parohan M; Zargar MS; Shab-Bidar S · Advances in nutrition (Bethesda, Md.) · 2019
    Meta-analysis507,251 participants41 studies pooledGeneral Health forSelenium
  3. The efficacy and safety of selenium supplementation versus placebo in the treatment of Graves' orbitopathy: A systematic review and meta-analysis of randomised controlled trials.
    Sharabati I; Qafesha RM; Hindawi MD; Amro S; Ayesh BM · Clinical endocrinology · 2024
    Meta-analysis4 studies pooledGeneral Health forSelenium
  4. Associations of plasma metal concentrations with the risks of all-cause and cardiovascular disease mortality in Chinese adults.
    Shi L; Yuan Y; Xiao Y; Long P; Li W; Yu Y; Liu Y; Liu K; Wang H; Zhou L; Yang H; Li X; He M; Wu T · Environment international · 2021
    Cohort study6,155 participantsGeneral Health forSelenium
  5. Updates on clinical studies of selenium supplementation in radiotherapy.
    Puspitasari IM; Abdulah R; Yamazaki C; Kameo S; Nakano T; Koyama H · Radiation oncology (London, England) · 2015
    Systematic review16 studies pooledGeneral Health forSelenium
  6. Effects of selenium supplementation on selenoprotein gene expression and response to influenza vaccine challenge: a randomised controlled trial.
    Goldson AJ; Fairweather-Tait SJ; Armah CN; Bao Y; Broadley MR; Dainty JR; Furniss C; Hart DJ; Teucher B; Hurst R · PloS one · 2011
    Randomized trial119 participantsImmunity forSelenium
  7. Effect of selenium on immune response against hepatitis B vaccine with accelerated method in insulin-dependent diabetes mellitus patients.
    Janbakhsh A; Mansouri F; Vaziri S; Sayad B; Afsharian M; Rahimi M; Shahebrahimi K; Salari F · Caspian journal of internal medicine · 2013
    Randomized trial62 participantsImmunity forSelenium
  8. Chemoprevention trial of human hepatitis with selenium supplementation in China.
    Yu SY; Li WG; Zhu YJ; Yu WP; Hou C · Biological trace element research · 1990
    Non-randomized trial20,847 participantsImmunity forSelenium
  9. Selenium nanoparticles as adjunctive therapy in sepsis: A pilot randomized clinical trial.
    Gu WJ; Huang W; Zhao FZ; Yuan XK; Jin K; Chen JL; Zhang CY; Huang Y; He L; Zhuang H; Yin HY; Chen T · Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2026
    Randomized trial70 participantsImmunity forSelenium
  10. Selenium supplementation in patients with autoimmune thyroiditis decreases thyroid peroxidase antibodies concentrations.
    Gärtner R; Gasnier BC; Dietrich JW; Krebs B; Angstwurm MW · The Journal of clinical endocrinology and metabolism · 2002
    Randomized trial70 participantsImmunity forSelenium