Selenium 200 mcg

Selenium 200 mcg

Nature's Way4.8 (14,430 ratings)
Format:Capsule Quantity: 100 Capsule(s) · 100 servings
Goals
$10.99 $0.10 per serving
iHerbLowest$10.99Vitacost$10.99Pure Formulas$10.99Amazon$10.99Vitacost$10.99

Product analysis

92 out of 100

Selenium 200 mcg provides selenium in a well-supported form to help fill a dietary gap and support normal immune function.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality100

Selenium is supplied in a well-supported form that the body can use. The single-ingredient formula makes its source straightforward to identify.

Ingredient Transparency100

Both the amount and the selenium form are disclosed. That makes it easy to compare the supplement with other selenium products.

Value For Money80

The selenium serving offers good value for the amount supplied. The price advantage does not imply that taking more selenium brings greater benefits.

Customer Satisfaction93

Customer ratings are very favorable across a large review base. They support confidence in satisfaction without establishing extra immune protection.

Product Focus84

The formula has a clear purpose: supplying selenium to help meet nutritional needs. Its roles in general health and immune function overlap rather than adding unrelated ingredients.

Format
Capsule
Container
100 Capsule(s)
Per serving
$0.10
Customer rating
4.8 · 14,430 ratings
Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A+ Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Selenium · 200 mcg
Study evidence
Selenium Mixed 37 studies
Everyday Health
Everyday Health
Impact
Highest effect
A+ Ingredient FitC PathwaysB+ EvidenceA+ Formulation Logic
Selenium · 200 mcg
Study evidence
Selenium Supportive 70 studies

Ingredients

IngredientAmount per servingScore
Selenium (L-Selenomethionine)
 200 mcg 96
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Selenium (L-Selenomethionine) · 200 mcg OverallScore96
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
Each serving provides 200 mcg of selenium, with a low cost for an equivalent 200 mcg. That amount is commonly used in research for antioxidant and thyroid support. It uses L-Selenomethionine.
How this ingredient is rated

Active Ingredient Quality & Bioavailability100

It uses L-Selenomethionine. The label identifies L-selenomethionine.
Selenium Chemical Form
It uses L-Selenomethionine.
Form Transparency & Isomer Specificity
The label identifies L-selenomethionine.

Dose, Safety & Label Transparency100

200 mcg per serving matches an amount commonly used in research for antioxidant and thyroid support. It remains below the upper intake limit, leaving room for dietary selenium.
Dosage Efficacy Sweet Spot
200 mcg per serving matches an amount commonly used in research for antioxidant and thyroid support.
Safety Margin & UL Adherence
The 200 mcg serving is below the 400 mcg upper intake limit, leaving room for selenium from food.

Value80

The cost for an equivalent 200 mcg of selenium is low.
Price per 200 mcg Serving
The cost for an equivalent 200 mcg of selenium is low.
View ingredientView products
87 Performance

Se-Methyl L-Selenocysteine 200 mcg

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Its label clearly provides 200 mcg of Selenium as Se-Methyl L-Selenocysteine, 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.

87 Performance

Selenium 200 mcg

California Gold Nutrition

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.

87 Performance

Selenium 200 mcg

NOW

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.

87 Budget

Selenium 200 mcg

Source Naturals

Its label clearly provides 37 mg of Calcium as Dibasic Calcium Phosphate, preserving relevant selenium coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.

86 Budget

Selenium 200 mcg

Solgar

Its label clearly provides 200 mcg of Selenium as 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.

86 Budget

SelenoExcell 200 mcg

Swanson Ultra

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.

87 Value

Selenium 200 mcg

NOW

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.

86 Value

Selenium 200 mcg

Solgar

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.

86 Value

SeMSC Selenium 200 mcg

Swanson

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.

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 pooledEveryday 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 pooledEveryday 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 pooledEveryday 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 participantsEveryday 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 pooledEveryday 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