Sundown Pre-Converted Form Ubiquinol supplement bottle
Sundown

Pre-Converted Form Ubiquinol Review

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 3 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
81
Brand Score Good

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
Ubiquinol (as CO Q-10) 100 mg
Bioavailability Excellent

Absorption Rating

  • Ubiquinol (as CO Q-10) Good
Other Ingredients Excellent

Fillers & Additives

  • Pure Olive Oil
  • Gelatin
  • Vegetable Glycerin
Efficacy Excellent

Dosage Analysis

  • Ubiquinol (as CO Q-10) 100 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Ubiquinol (as CO Q-10) 100 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Pure Olive Oil Safe

It is used as a filler and carrier in supplements.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Vegetable Glycerin Safe

Helps form softgel capsule shells and acts as a humectant.

Brand Trust Report
Sundown

Founded 1977 · Bridgewater, NJ, USA · 359 products · sundownnutrition.com/

Certifications

3 certifications
Consumerlab Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Claimed Source

Violation History

9 incidents
Lawsuit FTC charges of 'review hijacking' on Amazon to mislead consumers.2023Source
Lawsuit Deceptive 'review hijacking' on Amazon to mislead consumers about product ratings and popularity.2023Source
Lawsuit The Bountiful Company, including Sundown Naturals, engaged in 'review hijacking' on Amazon.com to deceive consumers.2023Source
Lawsuit Deceptive labeling of 'Complete' multivitamins that were missing essential B vitamins.2021Source
Lawsuit A class-action lawsuit was filed against Rexall Sundown, Inc., NatureSmart, LLC, and The Bountiful Company for misrepresenting 'Complete' multivitamin gummies that lacked all essential B vitamins.2021Source
Lawsuit Rexall Sundown, Inc. faced a class-action lawsuit for allegedly mislabeling joint health products.2017Source
Recall Rexall Calcium 1200 mg plus 1000IU Vitamin D3, 60 softgels2012-01-16Source
Lawsuit The FTC charged Rexall Sundown, Inc. with making misleading claims about its Cellasene product.2003Source
Lawsuit False and unsubstantiated claims for the 'Cellasene' supplement.2000Source
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Frequently Asked Questions
Is Sundown Pre-Converted Form Ubiquinol a good supplement?

Sundown Pre-Converted Form Ubiquinol received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Sundown, holds a brand trust score of 81/100 with 3 verified certifications including Consumerlab, Nsf Gmp, Usda Organic.

What are the ingredients in Sundown Pre-Converted Form Ubiquinol?

Sundown Pre-Converted Form Ubiquinol contains 1 active ingredients: Ubiquinol (as CO Q-10) (100 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Sundown Pre-Converted Form Ubiquinol safe to take?

Sundown Pre-Converted Form Ubiquinol has been analyzed for ingredient safety across all its components. All 3 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 Sundown a trustworthy supplement brand?

Sundown receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1977 and headquartered in Bridgewater, NJ, USA, the company offers 359 products in their lineup. They hold 3 verified certifications including Consumerlab, Nsf Gmp, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Sundown has 9 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.