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Selenium Solution

NutriCology
4.7
★ ★ ★ ★ ★
(992 ratings)
Selenium 100 mcg
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Score78
A flexible 100 mcg selenium liquid using a transparent but basic inorganic form.
How scoring works
Quantity:236 Liquid(s) • (94 servings)
Goals:
Immunity
General Health

Score 78

A flexible 100 mcg selenium liquid using a transparent but basic inorganic form.
How scoring works
$15.39($0.16 per serving)
iHerb
$ 16.19
Vitacost
$ 15.39
Pure Formulas
$ 16.19
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Analysis

Each serving supplies 100 mcg selenium as sodium selenite. The lower amount leaves more room for selenium already present in food or a multivitamin.

Liquid delivery can help people who avoid pills and may allow careful serving adjustment. Sodium selenite is less appealing than a named organic form for buyers prioritizing form quality.

The product fits targeted maintenance use rather than broad nutritional coverage. Full liquid ingredients and preservation details are not supplied.

Who is it for
  • People who prefer liquid supplements
  • Adults seeking a moderate selenium amount
Best for
  • Flexible selenium dosing
  • Tablet-free routines

Pros

  • Moderate 100 mcg amount
  • Clearly names sodium selenite
  • Liquid format is easy to take

Cons

  • Uses an inorganic selenium form
  • Full liquid ingredients are missing
  • Provides only one main nutrient

Warnings

  • Measure the liquid carefully because changing the serving changes selenium intake.

Nutrient quality

79 High impact

The maintenance amount is sensible and the single-active design remains focused. Sodium selenite offers weaker retention than preferred organic selenium forms.

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Ingredient transparency

84 Highest impact

The selenium source and amount are clearly disclosed without a hidden blend. Daily-use directions and non-active liquid ingredients are not supplied.

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Customer satisfaction

67 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.

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Value for money

78 High impact

The streamlined liquid provides acceptable value for maintenance use. Its less retained selenium form weakens the quality delivered per serving.

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Report analysis

Goals

Immunity
Immunity
Impact
High effect
B+ Goal FitB Strength of SupportC- CoverageA Formula Quality
Selenium · 100 mcg

Selenium supports foundational antioxidant enzymes and normal thyroid function. The formula mainly supports selenium-dependent antioxidant and thyroid pathways rather than broad nutrition.

The disclosed selenium amount is suitable for focused daily maintenance without approaching the adult upper limit. The label clearly identifies the selenium form and amount, supporting straightforward assessment.

Study evidence
Selenium Mixed 37 studies
General Health
General Health
Impact
High effect
A- Goal FitB- Strength of SupportC- CoverageA Formula Quality
Selenium · 100 mcg

Selenium supports antioxidant enzymes, thyroid hormone conversion, and normal immune function. The 100 mcg serving provides a useful maintenance amount for a foundational trace mineral.

Sodium selenite is less well retained than organic selenium forms, which limits formulation quality. Clear dosing and a streamlined liquid formula still make the product a practical option when selenium intake is low.

Study evidence
Selenium Supportive 70 studies

Ingredients

IngredientAmount per serving
Selenium (Sodium Selenite)
 100 mcg
Adults 18–50
Report overview
Selenium (Sodium Selenite) · 100 mcg OverallScore60
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value

The selenium dose supports daily maintenance, but sodium selenite is a less retained inorganic form. The label clearly identifies the source and leaves a wide safety margin below the daily upper limit. Cost efficiency is moderate when standardized to the reference dose.

View ingredientView products
Loading alternative details
87 Performance

Selenium 200 mcg

Nature's Way
<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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Selenium 200 mcg

California Gold Nutrition
<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>
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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Se-Methyl L-Selenocysteine 200 mcg

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<p>Its label clearly provides 200 mcg of Selenium as Se-Methyl L-Selenocysteine, 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

Solgar
<p>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.</p>
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SeMSC Selenium 200 mcg

Swanson
<p>Its label clearly provides 200 mcg of Selenium as L-Se-Methylselenocysteine, 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

Source Naturals
<p>Its label clearly provides 37 mg of Calcium as Dibasic Calcium Phosphate, 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>
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>
86 Value

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 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