Selenium 200 mcg

Selenium 200 mcg

Source Naturals4.8 (649 ratings)
Format:Tablet Quantity: 120 Tablet(s) · 120 servings
Goals
$8.97 $0.07 per serving
Pure FormulasLowest$8.97iHerb$9.74Vitacost$9.89

Product analysis

92 out of 100

Selenium 200 mcg offers an affordable way to fill a selenium shortfall and support normal immune and antioxidant functions.

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

Nutrient Quality90

Selenium comes from a well-characterized yeast source. That helps identify the ingredient, without showing that everyone will benefit from taking it.

Ingredient Transparency100

The selenium amount and source are clearly stated. You can check the serving and compare it with other selenium supplements.

Value For Money100

The cost is favorable for the amount of selenium supplied. It offers economical selenium supplementation when extra intake is useful.

Customer Satisfaction81

Customer ratings are very positive across hundreds of reviews. The feedback supports a favorable view of satisfaction, without confirming effectiveness or safety.

Product Focus84

Selenium supports normal immune and antioxidant functions, especially when intake is low. Extra benefit is unproven when you already get enough, and the higher serving does not establish greater benefit or safety.

Format
Tablet
Container
120 Tablet(s)
Per serving
$0.07
Customer rating
4.8 · 649 ratings
Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A+ Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Selenium · 200 mcg

Selenium contributes to normal immune function. Its declared amount reaches the saved comparison, but higher intake does not establish added immune benefit when selenium status is already adequate. The supplied evidence does not establish general respiratory infection prevention.

How this product is rated for Immunity

Ingredient fit97

Selenium gives the formula a clear immune-related focus. The declared serving reaches the saved amount comparison; that comparison does not establish an optimal dose.
Goal fit
Selenium gives the formula a clear immune-related focus.
Dose adequacy
The declared serving reaches the saved amount comparison; that comparison does not establish an optimal dose.

Pathways53

The strongest saved connection is oxidative and inflammatory balance, with a limited contribution from the supplied serving.
Depth
The strongest saved connection is oxidative and inflammatory balance, with a limited contribution from the supplied serving.
Breadth
One immune function reaches the saved coverage threshold, so the contribution is relatively narrow.

Evidence85

Vitamin C supplies the strongest saved evidence connection; its supported role does not establish broad infection prevention.
Evidence strength
Vitamin C supplies the strongest saved evidence connection; its supported role does not establish broad infection prevention.
Studied preparation
The saved preparation matching is favorable; it does not establish superiority over other nutrient forms.

Formulation logic100

Neither specified zinc conflict applies to the supplied facts; these checks do not establish overall safety.
Partner coverage
The included ingredients require no missing partner under the supplied findings; this does not imply extra benefit from combining them.
Conflicts
Neither specified zinc conflict applies to the supplied facts; these checks do not establish overall safety.
Effective doses
All included ingredients counted here meet the saved minimum amount comparison; this is not proof of clinical effectiveness.
Study evidence
Selenium Mixed 37 studies
Everyday Health
Everyday Health
Impact
Highest effect
A+ Ingredient FitC PathwaysB+ EvidenceA+ Formulation Logic
Selenium · 200 mcg

Selenium contributes a nutrient used in normal antioxidant and immune functions when intake is low. Most U.S. adults obtain adequate selenium, and its enzyme roles do not establish added benefit in selenium-replete people. The 200 mcg serving reaches the supplied amount comparison’s upper allowance, without demonstrating extra benefit from that amount or establishing safety.

How this product is rated for Everyday Health

Ingredient fit97

The contributing ingredients reach the upper amount allowance; larger amounts do not establish greater health benefits.
Goal fit
The contributing ingredients are focused on general health, although the product is also linked to other goals.
Dose adequacy
The contributing ingredients reach the upper amount allowance; larger amounts do not establish greater health benefits.

Pathways60

The strongest contribution is in antioxidant and immune functions, with substantial support in the supplied comparison. The meaningful contribution is concentrated in one area, limiting coverage of this broad goal.
Depth
The strongest contribution is in antioxidant and immune functions, with substantial support in the supplied comparison.
Breadth
The meaningful contribution is concentrated in one area, limiting coverage of this broad goal.

Evidence82

Selenium leads the supplied evidence comparison; normal nutritional functions do not establish additional benefit when intake is adequate.
Evidence strength
Selenium leads the supplied evidence comparison; normal nutritional functions do not establish additional benefit when intake is adequate.
Studied preparation
The contributing ingredients with qualifying amounts match accepted preparations, without establishing superior effects from their particular forms.

Formulation logic100

All retained contributors reach the comparison’s minimum amount allowance; this is not a proven clinical treatment threshold.
Partner coverage
The contributing ingredients can act independently or have their required partners; an extra combination benefit is not established.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
All retained contributors reach the comparison’s minimum amount allowance; this is not a proven clinical treatment threshold.
Study evidence
Selenium Supportive 70 studies

Ingredients

IngredientAmount per servingScore
Selenium (Selenium Yeast)
 200 mcg 92
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
A serving supplies 200 mcg of selenium from selenium-enriched yeast. The whole-product price works out to $0.07 per 200 mcg of selenium.
How this ingredient is rated

Active Ingredient Quality & Bioavailability81

Selenium comes from selenium-enriched yeast.
Selenium Chemical Form
Selenium comes from selenium-enriched yeast.
Form Transparency & Isomer Specificity
Selenium-enriched yeast is named, with no trademarked selenium source identified in the saved details.

Dose, Safety & Label Transparency100

The serving provides 200 mcg of selenium. It is below the adult upper limit, leaving room for selenium from other sources.
Dosage Efficacy Sweet Spot
The serving provides 200 mcg of selenium.
Safety Margin & UL Adherence
The 200 mcg of selenium per serving is below the adult upper limit, leaving room for selenium from other sources.

Value100

Based on the whole-product price, 200 mcg of selenium corresponds to $0.07.
Price per 200 mcg Serving
Based on the whole-product price, 200 mcg of selenium corresponds to $0.07.
View ingredientView products
87 Performance

Selenium 200 mcg

Nature's Way

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

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.

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 Budget

Selenium 100 mcg

Swanson

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.

85 Budget

Selenium 200 mcg

Healthy Origins

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.

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