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Selenium 200 mcg

Metabolic Maintenance
4.8
★ ★ ★ ★ ★
(87 ratings)
Selenium 200 mcg
Product Image
Score79
A clear, focused selenium-and-vitamin-C formula using a strong selenium form. It fits targeted supplementation better than broad daily coverage.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Immunity
General Health

Score 79

A clear, focused selenium-and-vitamin-C formula using a strong selenium form. It fits targeted supplementation better than broad daily coverage.
How scoring works
$24.50($0.27 per serving)
iHerb
$ 24.50
Pure Formulas
$ 26.50
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Analysis

L-selenomethionine provides a clearly identified organic selenium form at 200 mcg. Vitamin C adds 250 mg from ascorbic acid and ascorbyl palmitate, broadening the antioxidant-enzyme support without a proprietary blend.

The selenium amount aligns with focused supplementation, while vitamin C is useful but not unusually high. Every active and form is disclosed, making the combination easy to evaluate around other products.

One capsule per serving suits people addressing selenium intake while wanting some added vitamin C. Its narrow two-nutrient design does not cover zinc, vitamin D, or other common nutritional gaps.

Who is it for
  • Adults specifically seeking selenium with vitamin C
  • People who value precise ingredient forms
Best for
  • Targeted selenium intake
  • Antioxidant nutrient support
  • Simple two-nutrient supplementation

Pros

  • Uses L-selenomethionine
  • Provides 250 mg vitamin C
  • Clearly discloses both vitamin C forms
  • One-capsule serving

Cons

  • Limited to two nutrients
  • Only moderate value for a focused formula
  • Selenium amount may be unnecessary with a high-selenium multivitamin

Warnings

  • The 200 mcg selenium amount should not be combined casually with another selenium supplement.
  • Chronic excess selenium can cause brittle hair or nails, nausea, or a garlic-like breath odor.
  • People being treated for a thyroid disorder should account for total selenium intake with their clinician before adding a substantial supplemental amount.

Nutrient quality

91 Highest impact

L-selenomethionine is a preferred organic form with clear isomer disclosure. The selenium amount remains below the adult upper limit but requires accounting for other selenium sources.

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Ingredient transparency

78 High impact

Selenium is clear, but two full-amount vitamin C source lines make the vitamin C split ambiguous. Complete directions and inactive ingredients are not supplied.

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Customer satisfaction

61 Moderate impact

The supplied aggregate rating indicates very strong customer satisfaction. Specific comments are unavailable, so complaint patterns and intended-use fit cannot be verified.

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Value for money

80 Highest impact

Preferred selenium form and vitamin C support fair quality value. The serving cost is moderate and the feedback base is small.

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Report analysis

Goals

Immunity
Impact
Highest effect
A Goal FitA+ Strength of SupportB CoverageA+ Formula Quality
Vitamin C · 250 mgSelenium · 200 mcg

A full selenium amount supports antioxidant enzymes and immune-cell function, while vitamin C adds complementary oxidative-stress control. The two-nutrient approach has strong depth but does not cover vitamin D, zinc, or mucosal pathways.

L-selenomethionine is a preferred organic form with precise isomer disclosure. Selenium reaches the main target, while vitamin C is useful but below the standalone immune dose target.

Study evidence
Selenium Mixed 37 studies
Vitamin C Supportive 53 studies
General Health
Impact
Highest effect
B+ Goal FitA Strength of SupportC- CoverageA Formula Quality
Selenium · 200 mcgVitamin C · 250 mg

Selenium in a preferred organic form provides focused support for antioxidant enzymes and thyroid function. The serving is clearly disclosed and well aligned with common supplemental use.

A single trace mineral cannot cover the many pathways involved in general wellness. It is most appropriate when selenium intake is the specific nutritional gap being addressed.

Study evidence
Selenium Supportive 70 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid, Ascorbyl Palmitate)
250 mg
Selenium (L-Selenomethionine)
200 mcg
Gluten Free Adults 18–50 Dairy Free
Report overview
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value

L-selenomethionine provides a preferred organic form with precise isomer disclosure. The full target dose matches common clinical use while remaining within the daily upper limit. The cost adjusted to the target dose is moderate for the target selenium dose. The preferred organic form adds useful quality despite the cost.

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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
  11. Vitamin C and contribution to the normal function of the immune system: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusImmunity forVitamin C
  12. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
    Sun L; Zhao JH; Fan WY; Feng B; Liu WW; Chen RQ; Ban C; Dang AG; Wang M; Luo KT; Zhou GY; Yu FF; Ba Y · Nutrition reviews · 2024
    Meta-analysis2,334 participants14 studies pooledImmunity forVitamin C
  13. Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
    Abioye AI; Bromage S; Fawzi W · BMJ global health · 2021
    Meta-analysisImmunity forVitamin C
  14. New evidence for antioxidant properties of vitamin C.
    Vojdani A; Bazargan M; Vojdani E; Wright J · Cancer detection and prevention · 2001
    Randomized trial20 participantsImmunity forVitamin C
  15. Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
    Calder PC; Kreider RB; McKay DL · Nutrients · 2025
    Systematic review13 studies pooledImmunity forVitamin C