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Selenium 200 mcg

Solgar
4.8
★ ★ ★ ★ ★
(3378 ratings)
Selenium 200 mcg
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Score86
Selenium 200 mcg offers a clearly identified, well-absorbed organic form at 200 mcg per serving. It fits targeted selenium use, but buyers seeking broader daily nutrient support will need a different formula.
How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:
General Health
Immunity

Score 86

Selenium 200 mcg offers a clearly identified, well-absorbed organic form at 200 mcg per serving. It fits targeted selenium use, but buyers seeking broader daily nutrient support will need a different formula.
How scoring works
$10.64($0.10 per serving)
Daily Vita
$ 11.71
iHerb
$ 10.64
Pure Formulas
$ 10.64
Vitacost
$ 10.75
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Analysis

A 200 mcg serving provides a clearly identified, well-absorbed organic form in a focused selenium formula. The substantial amount is clearly disclosed and suits people who have a specific reason to supplement selenium.

Selenium supports antioxidant enzymes, normal thyroid hormone conversion, and immune function. The single-active formula is easy to understand, but it does not cover the broader nutrient pathways involved in general wellness or immune support.

A 100-serving supply provides good serving value for a focused formula. Because the serving already provides a substantial amount, total intake from food and other supplements deserves attention.

Who is it for
  • Adults seeking a 200 mcg selenium supplement
  • People who prefer tablets for routine use
  • Users who want a simple, single-active formula
Best for
  • Targeted selenium supplementation
  • Antioxidant enzyme support
  • Normal thyroid and immune function support

Pros

  • 200 mcg selenium amount is fully disclosed
  • L-Selenomethionine clearly identifies the active form
  • 100 servings per container support routine use
  • Good serving value

Cons

  • The supplied label details do not describe inactive ingredients or other formulation features.
  • The focused formula does not provide vitamin D, zinc, vitamin C, or other complementary nutrients.
  • The substantial serving offers less flexibility for people who already get selenium from other sources.

Warnings

  • The 200 mcg selenium serving is substantial; include other selenium supplements when calculating total daily intake.
  • Frequent Brazil-nut intake or another selenium-rich product can materially increase the total alongside this 200 mcg serving.
  • Persistent hair or nail changes, a metallic taste, or a garlic-like breath odor can signal excessive selenium intake and warrant stopping use and seeking advice.

Nutrient quality

93 Highest impact

The focused selenium formula provides a meaningful amount for antioxidant, thyroid, and immune support. Form quality and dose balance determine the main strengths and trade-offs.

Ingredient transparency

82 Highest impact

The active amount is clearly disclosed without a hidden blend. Intake directions and non-active ingredients are not included, while form specificity varies by product.

Customer satisfaction

72 High impact

The aggregate rating is favorable and the response base provides useful context. No review text is supplied, so repeated complaints and specific product experiences cannot be verified.

Value for money

98 Highest impact

The focused formula provides meaningful selenium at a very low ongoing cost. Strong cost efficiency and minimal active padding support excellent category value.

Report analysis

Goals

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

L-selenomethionine supplies a well-absorbed selenium form for antioxidant enzymes, thyroid hormone metabolism, and immune function. The clearly stated amount is substantial while remaining below the established daily upper limit.

Its contribution is meaningful but narrow because no other foundational nutrients are included. The streamlined formula avoids blends and makes the active form easy to assess.

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

L-selenomethionine provides a highly usable source of an immune-relevant antioxidant mineral. The purposeful amount and exact form disclosure make the formula easy to assess.

Its support is narrow because one trace mineral does not cover the major immune pathways on its own. Users already taking selenium should account for combined intake because the serving is substantial.

Study evidence
Selenium Mixed 37 studies

Ingredients

IngredientAmount per serving
Selenium (L-Selenomethionine)
200 mcg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Sugar Free Vegetarian
Report overview
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

L-selenomethionine provides a well-absorbed organic form with precise isomer disclosure. The serving matches the common clinical target while maintaining a useful safety margin for dietary intake. A low cost per target amount makes it efficient for routine use.

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Sources

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

  1. Selenium intake and multiple health-related outcomes: an umbrella review of meta-analyses.
    Wang P; Chen B; Huang Y; Li J; Cao D; Chen Z; Li J; Ran B; Yang J; Wang R; Wei Q; Dong Q; Liu L · Frontiers in nutrition · 2024
    Systematic reviewGeneral Health forSelenium
  2. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis.
    Bjelakovic G; Nikolova D; Gluud LL; Simonetti RG; Gluud C · JAMA · 2007
    Meta-analysis232,606 participants68 studies pooledGeneral Health forSelenium
  3. Effect of long-term selenium supplementation on mortality: Results from a multiple-dose, randomised controlled trial.
    Rayman MP; Winther KH; Pastor-Barriuso R; Cold F; Thvilum M; Stranges S; Guallar E; Cold S · Free radical biology & medicine · 2019
    Randomized trial491 participantsGeneral Health forSelenium
  4. Selenium and immune function: a systematic review and meta-analysis of experimental human studies.
    Filippini T; Fairweather-Tait S; Vinceti M · The American journal of clinical nutrition · 2023
    Meta-analysis9 studies pooledImmunity forSelenium
  5. Selenium supplementation has beneficial and detrimental effects on immunity to influenza vaccine in older adults.
    Ivory K; Prieto E; Spinks C; Armah CN; Goldson AJ; Dainty JR; Nicoletti C · Clinical nutrition (Edinburgh, Scotland) · 2018
    Randomized trial117 participantsImmunity forSelenium
  6. Humoral immune response to COVID-19 mRNA vaccination in relation to selenium status.
    Demircan K; Chillon TS; Sun Q; Heller RA; Klingenberg GJ; Hirschbil-Bremer IM; Seemann P; Diegmann J; Bachmann M; Moghaddam A; Schomburg L · Redox biology · 2022
    Cohort study126 participantsImmunity forSelenium
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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