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CoQ10 50 mg

NOW
4.8
★ ★ ★ ★ ★
(1905 ratings)
Selenium 70 mcg
Coenzyme Q-10 50 mg
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Score80
A coherent long-supply antioxidant softgel with good vitamin E and selenium forms but only modest, unspecified CoQ10.
How scoring works
Quantity:100 Softgel(s) • (100 servings)
Goals:
General Health
Immunity

Score 80

A coherent long-supply antioxidant softgel with good vitamin E and selenium forms but only modest, unspecified CoQ10.
How scoring works

Also available as

1 option
50 servings Selenium 70 mcg, Coenzyme Q-10 50 mg • 50 Softgel(s) • 50 servings $9.22 ($0.18 per serving)
$17.40($0.17 per serving)
iHerb
$ 18.36
iHerb
$ 18.36
Daily Vita
$ 17.40
Vitacost
$ 20.03
Report prices

Analysis

The formula pairs CoQ10 with natural vitamin E and organic selenium for mitochondrial and antioxidant support. A softgel is an appropriate delivery format for the fat-soluble ingredients.

CoQ10 is present at a maintenance-oriented amount, and the label does not clarify whether it is ubiquinone or ubiquinol. The other two nutrients use well-characterized forms but do not turn the product into comprehensive daily nutrition.

The larger count may suit established users who are comfortable with the lighter CoQ10 dose. General-health and immune fit comes mainly from basic energy and antioxidant pathways rather than broad nutrient coverage.

Who is it for
  • Adults wanting maintenance-level CoQ10
  • Long-term users seeking a larger supply
  • People prioritizing selenium form quality
Best for
  • Cellular-energy support
  • Antioxidant nutrient intake
  • Routine low-dose CoQ10 use

Pros

  • Uses natural vitamin E
  • Uses L-selenomethionine
  • Appropriate softgel format
  • Large supply

Cons

  • CoQ10 molecular form is unclear
  • CoQ10 dose is modest
  • Limited immune breadth
  • Not comprehensive general nutrition

Warnings

  • CoQ10 may alter warfarin response, so anticoagulation should be monitored when a vitamin K antagonist user starts or stops it.

Nutrient quality

82 Highest impact

L-selenomethionine and natural vitamin E are well-regarded forms, while the CoQ10 form is unspecified. The moderate CoQ10 amount fits basic use better than higher-intensity supplementation.

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Ingredient transparency

80 Highest impact

The main active amounts are mostly visible, making the core formula possible to assess. Serving directions and non-active ingredients are missing, and any named blend further limits clarity.

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Customer satisfaction

70 High impact

The supplied average is very strong and the response volume is substantial. No detailed feedback is provided to assess recurring complaints or fit with the intended purpose.

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Value for money

89 Highest impact

The larger supply provides good serving value for a basic CoQ10 formula. Uncertain CoQ10 absorption quality keeps the value from being exceptional.

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Report analysis

Goals

General Health
General Health
Impact
Highest effect
B+ Goal FitB- Strength of SupportC+ CoverageA Formula Quality
Selenium · 70 mcg

CoQ10, natural vitamin E, and selenium support cellular energy and antioxidant defenses. The ingredients are established, but the formula does not cover many nutritional gaps.

L-selenomethionine is well absorbed and every active amount is disclosed. Selenium is modest and CoQ10 is also supplied at a relatively light amount.

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

Selenomethionine supports glutathione-dependent antioxidant defenses and normal immune regulation. Natural vitamin E and CoQ10 add complementary lipid-phase and mitochondrial antioxidant support.

The selenium amount is useful, while CoQ10 contributes more to general cellular energy than direct immune defense. The softgel formula is transparent and coherent but lacks vitamin C, vitamin D, zinc, or barrier-focused nutrients.

Study evidence
Selenium Mixed 37 studies
Vitamin E Supportive 21 studies

Ingredients

IngredientAmount per serving
Vitamin E (D-Alpha-Tocopherol)
 20 mg
Selenium (L-Selenomethionine)
 70 mcg
Coenzyme Q10
50 mg
Gluten Free Adults 18–50 Kosher Dairy Free
Report overview
Selenium (L-Selenomethionine) · 70 mcg OverallScore82
A+ Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyC Value

L-selenomethionine provides a highly bioavailable organic source with clear isomer identification. The modest amount may contribute to intake but falls below the preferred maintenance range. Standardized selenium cost is moderate for the amount delivered.

View ingredientView products
Coenzyme Q-10 · 50 mg OverallScore50
F Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyC Value

The molecular form is missing from the supplied label data. Although presented as a softgel, the formula does not identify a qualifying oil base. Its moderate amount and favorable cost may fit basic maintenance, with uncertainty around absorption quality.

View ingredientView products
Loading alternative details
87 Performance

Mega CoQ10 Ubiquinol 100 mg

Qunol
Ubiquinol provides the reduced CoQ10 form at twice the original amount in a softgel. It omits selenium but offers a more focused and readily used CoQ10 option.
87 Performance

Extra Strength Ubiquinol 200 mg

NOW
A substantial 200 mg ubiquinol serving provides four times the original CoQ10 amount in a suitable softgel. Selenium and vitamin E are absent, so the improvement is specific to CoQ10 potency.
87 Performance

QH-absorb 100 mg

Jarrow Formulas
The reduced ubiquinol form and a meaningful 100 mg amount improve CoQ10 form and dose quality. It may reduce warfarin response, and the formula does not preserve the original selenium.
87 Budget

Se-Methyl L-Selenocysteine 200 mcg

Life Extension
A clearly identified organic selenium form provides a larger selenium amount at lower recurring cost. It omits CoQ10 entirely, so it is only a fit when selenium is the priority rather than combined antioxidant coverage.
87 Budget

Selenium 200 mcg

California Gold Nutrition
L-selenomethionine supplies a well-absorbed organic selenium form with a long, inexpensive supply. The focused formula does not replace the original CoQ10 or vitamin E.
85 Budget

High Absorption CoQ10 with BioPerine 100 mg

Doctor's Best
Twice the CoQ10 amount is supplied at a lower serving cost, and piperine may support exposure. The dry capsule lacks a lipid carrier, while piperine may alter the handling of some medicines.
87 Value

CoQ10 200 mg

California Gold Nutrition
A 200 mg ubiquinone serving provides four times the CoQ10 at a favorable recurring cost. The focused softgel omits selenium and does not disclose full excipient details.
83 Value

CoQ10 100 mg

Healthy Origins
A practical 100 mg ubiquinone amount and very low serving cost create strong routine value. Selenium and vitamin E are not included, so it is a simpler CoQ10-only choice.
84 Value

High Absorption CoQ10 200 mg

Doctor's Best
A substantial ubiquinone amount combines with piperine and economical servings for strong active value. Piperine can affect some medicines, and CoQ10 may reduce warfarin response.
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
  11. Vitamin E supplementation enhances cell-mediated immunity in healthy elderly subjects.
    Meydani SN; Barklund MP; Liu S; Meydani M; Miller RA; Cannon JG; Morrow FD; Rocklin R; Blumberg JB · The American journal of clinical nutrition · 1990
    Randomized trial32 participantsImmunity forVitamin E
  12. Immunomodulatory effects of palm-derived tocotrienol-rich fraction in healthy volunteers following influenza vaccination: A randomised clinical trial.
    Chen S; Ahmad B; Palanisamy UD; Hafid SRA; Selvaduray KR; Radhakrishnan AK · Nutrition research (New York, N.Y.) · 2026
    Randomized trial150 participantsImmunity forVitamin E
  13. Effects of supplementation with tocotrienol-rich fraction on immune response to tetanus toxoid immunization in normal healthy volunteers.
    Mahalingam D; Radhakrishnan AK; Amom Z; Ibrahim N; Nesaretnam K · European journal of clinical nutrition · 2011
    Randomized trialImmunity forVitamin E
  14. Vitamin E and beta-carotene supplementation and hospital-treated pneumonia incidence in male smokers.
    Hemilä H; Virtamo J; Albanes D; Kaprio J · Chest · 2004
    Randomized trial29,133 participantsImmunity forVitamin E
  15. Vitamin E supplementation and in vivo immune response in healthy elderly subjects. A randomized controlled trial.
    Meydani SN; Meydani M; Blumberg JB; Leka LS; Siber G; Loszewski R; Thompson C; Pedrosa MC; Diamond RD; Stollar BD · JAMA · 1997
    Randomized trial88 participantsImmunity forVitamin E