Doctor's Best CoQ10 plus Selenium Yeast supplement bottle
Doctor's Best

CoQ10 plus Selenium Yeast Review

What We Researched
2 active ingredients analyzed · 4 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
93
Product Score Excellent
61
Brand Score Fair

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Selenium (as Saccharomyces cerevisae, Selenium Yeast) 200 mcg 360%
Coenzyme Q10 (as Ubiquinone) 200 mg
Bioavailability Very Good

Absorption Rating

  • Selenium (as Saccharomyces cerevisae, Selenium Yeast) Good
  • Coenzyme Q10 (as Ubiquinone) Fair
Other Ingredients Excellent

Fillers & Additives

  • Rice Powder
  • Modified Cellulose
  • Magnesium Stearate
  • Silicon Dioxide
Efficacy Excellent

Dosage Analysis

  • Selenium (as Saccharomyces cerevisae, Selenium Yeast) 200 mcg Effective
  • Coenzyme Q10 (as Ubiquinone) 200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Selenium (as Saccharomyces cerevisae, Selenium Yeast) 200 mcg 360%
Coenzyme Q10 (as Ubiquinone) 200 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Rice Powder Safe

It is used as a filler or flow agent.

Modified Cellulose Safe

Creates vegetarian capsule shells with controlled dissolution.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Brand Trust Report
Doctor's Best

Founded 1990 · Tustin, California, USA · 351 products · doctorsbest.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

3 incidents
Lawsuit False advertising and mislabeling of glucosamine supplements.2022Source
Recall Red Yeast Rice2014-06-26Source
Recall Red Yeast Rice 600 mg Capsules, 120-count bottles2014-06-24Source
Related Supplements
Frequently Asked Questions
Is Doctor's Best CoQ10 plus Selenium Yeast a good supplement?

Doctor's Best CoQ10 plus Selenium Yeast received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 2 active ingredients with 90 servings per container. All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Doctor's Best, holds a brand trust score of 61/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Doctor's Best CoQ10 plus Selenium Yeast?

Doctor's Best CoQ10 plus Selenium Yeast contains 2 active ingredients: Selenium (as Saccharomyces cerevisae, Selenium Yeast) (200 mcg), Coenzyme Q10 (as Ubiquinone) (200 mg). Notable high-dose ingredients include Selenium at 360% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Doctor's Best CoQ10 plus Selenium Yeast safe to take?

Doctor's Best CoQ10 plus Selenium Yeast has been analyzed for ingredient safety across all its components. All 4 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Doctor's Best a trustworthy supplement brand?

Doctor's Best receives a brand trust score of 61/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1990 and headquartered in Tustin, California, USA, the company offers 351 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Doctor's Best has 3 historical regulatory incidents on record, which are factored into the trust score.

What is coq10?

Coq10 is a topic many supplement consumers ask about. In the context of dietary supplements, understanding coq10 helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 150,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

What is coq10 good for?

Coq10 Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding coq10 good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 150,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much coq10 should i take?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.