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Selenium 200 mcg

Source Naturals
4.8
★ ★ ★ ★ ★
(649 ratings)
Selenium 200 mcg
Product Image
Score84
A focused 200 mcg selenium tablet using selenium yeast, with clear dosing but incomplete non-active ingredient details.
How scoring works
Quantity:120 Tablet(s) • (120 servings)
Goals:
Immunity
General Health

Score 84

A focused 200 mcg selenium tablet using selenium yeast, with clear dosing but incomplete non-active ingredient details.
How scoring works

Also available as

1 option
100.00mcg • 250 servings Selenium 100 mcg • 250 Tablet(s) • 250 servings $12.59 ($0.05 per serving)
$8.97($0.07 per serving)
Vitacost
$ 9.89
Pure Formulas
$ 8.97
iHerb
$ 9.74
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 is a useful source, although its individual selenium compounds are not named. The supplied details do not include non-active ingredients, so capsule or tablet suitability cannot be fully checked.

The long tablet supply offers favorable routine value. 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 tablet format
Best for
  • Targeted selenium intake
  • Simple supplement routines

Pros

  • Clearly states 200 mcg selenium
  • Uses selenium yeast
  • The long tablet supply offers favorable routine value.

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.

.

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.

.

Customer satisfaction

68 High impact

The available rating is strong and the sample is moderate. 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 long supply deliver excellent practical value. Limited source precision is the only notable quality trade-off.

.
Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
B+ Goal FitA Strength of SupportC- CoverageA+ Formula Quality
Selenium · 200 mcg

Selenium yeast provides a well-aligned amount for antioxidant enzymes that help immune cells manage oxidative stress. Food-form yeast is a useful source, although the precise selenium species is not stated.

The formula offers strong depth for selenium but does not address barrier nutrients, zinc status, or other immune pathways. Its single-active design is clear and appropriately focused.

Study evidence
Selenium Mixed 37 studies
General Health
General Health
Impact
Highest effect
B+ Goal FitA- Strength of SupportC- CoverageA Formula Quality
Selenium · 200 mcg

Selenium yeast provides focused support for normal antioxidant enzymes and thyroid function. The targeted serving remains below the adult upper intake limit.

The product does not describe the specific selenium compounds or source quality. Combining it with other selenium supplements can push long-term intake too high and raise the risk of hair, nail, or digestive effects.

Study evidence
Selenium Supportive 70 studies

Ingredients

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

Selenium yeast provides a food-form source at the target amount for antioxidant and thyroid support. The generic yeast description is useful but does not identify a studied branded source or precise active form. The low serving cost and generous safety margin make it a strong practical fit.

View ingredientView products
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87 Performance

Selenium 200 mcg

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<p>Its label clearly provides 200 mcg of Selenium as L-Selenomethionine, making it a more clearly defined selenium option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
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<p>Its label clearly provides 200 mcg of Selenium as L-Selenomethionine, making it a more clearly defined selenium option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
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<p>Its label clearly provides 200 mcg of Selenium as L-Selenomethionine, making it a more clearly defined selenium option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
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SelenoExcell 200 mcg

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<p>Its label clearly provides 200 mcg of Selenium as SelenoExcell organically bound high-Selenium Yeast, preserving relevant selenium coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
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Selenium 100 mcg

Swanson
<p>Its label clearly provides 100 mcg of Selenium as Selenium SeLECT L-Selenomethionine, preserving relevant selenium coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
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Selenium 200 mcg

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<p>Its label clearly provides 200 mcg of Selenium as SelenoExcell High Selenium Yeast, preserving relevant selenium coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
87 Value

Selenium 200 mcg

NOW
<p>Its label clearly provides 200 mcg of Selenium as L-Selenomethionine, 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>
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Selenium 200 mcg

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

Swanson
<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