Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps supplement bottle
Doctor's Best

CoQ10 L-Carnitine Magnesium, 90 Veggie Caps

What We Researched
3 active ingredients analyzed · 4 inactive ingredients decoded · 1 brand certification checked · 4 retailers compared · Last updated: Mar 2026
91
Product Score Excellent
61
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium(from 1,112 mg magnesium bisglycinate chelate buffered - magnesium bisglycinate chelate, magnesium oxide) (Albion®) 200 mg 48%
L-Carnitine Fumarate(yielding 500 mg L-Carnitine) 855 mg
Coenzyme Q10 (Ubiquinone) 200 mg
Bioavailability Good

Absorption Rating

  • Magnesium(from 1,112 mg magnesium bisglycinate chelate buffered - magnesium bisglycinate chelate, magnesium oxide) (Albion®) Good
  • L-Carnitine Fumarate(yielding 500 mg L-Carnitine) Fair
  • Coenzyme Q10 (Ubiquinone) Fair
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Vegetarian Capsule)
  • Silicon Dioxide
  • Magnesium Stearate (Vegetable Source)
  • Microcrystalline Cellulose
Efficacy Excellent

Dosage Analysis

  • Magnesium(from 1,112 mg magnesium bisglycinate chelate buffered - magnesium bisglycinate chelate, magnesium oxide) (Albion®) 200 mg Effective
  • L-Carnitine Fumarate(yielding 500 mg L-Carnitine) 855 mg Effective
  • Coenzyme Q10 (Ubiquinone) 200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium(from 1,112 mg magnesium bisglycinate chelate buffered - magnesium bisglycinate chelate, magnesium oxide) (Albion®) 200 mg 48%
L-Carnitine Fumarate(yielding 500 mg L-Carnitine) 855 mg
Coenzyme Q10 (Ubiquinone) 200 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Vegetarian Capsule) Safe

It is used as a material for making vegetarian capsules.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Magnesium Stearate (Vegetable Source) Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 Mar 12 $24.99$24.99
iHerb
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Doctor's Best

Founded 1990 · Tustin, California, USA · 186 products · doctorsbest.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Recall Red Yeast Rice2014-06-26Source
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Frequently Asked Questions
Is Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps a good supplement?

Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 3 active ingredients Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review. 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 L-Carnitine Magnesium, 90 Veggie Caps?

Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps contains 3 active ingredients: Magnesium(from 1,112 mg magnesium bisglycinate chelate buffered - magnesium bisglycinate chelate, magnesium oxide) (Albion®) (200 mg), L-Carnitine Fumarate(yielding 500 mg L-Carnitine) (855 mg), Coenzyme Q10 (Ubiquinone) (200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps safe to take?

Doctor's Best CoQ10 L-Carnitine Magnesium, 90 Veggie Caps has been analyzed for ingredient safety across all its components. 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 186 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 1 historical regulatory incident on record, which are factored into the trust score.

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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. 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.