CoQ10 L-Carnitine Magnesium

CoQ10 L-Carnitine Magnesium

Doctor's Best4.8 (1,937 ratings)
Format:Capsule Quantity: 90 Veggie Cap(s) · 30 servings
Goals
$24.99 $0.83 per serving

Product analysis

53 out of 100

CoQ10 L-Carnitine Magnesium combines ingredients with limited support for blood-vessel function and for meeting magnesium needs. Unclear magnesium and carnitine details make parts of the formula harder to compare.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality27

CoQ10 is clearly identified as ubiquinone, while magnesium and carnitine have less complete form details. The magnesium mixture does not disclose proportions, so it should not be assumed to behave like pure bisglycinate.

Ingredient Transparency75

Listed amounts are disclosed, but only the CoQ10 form is clearly identified. The carnitine compound amount does not establish the amount of L-carnitine itself.

Value For Money35

Value is more favorable for CoQ10 than for the magnesium or carnitine contributions. The undisclosed magnesium proportions also limit comparison with products based on a single identified form.

Customer Satisfaction86

Customer feedback is very positive across a substantial review base. It supports satisfaction with the purchase, without establishing heart or energy benefits.

Product Focus66

The clearest connections are limited blood-vessel support from CoQ10 and nutritional support from magnesium when intake is low. The wide range of other proposed uses is less certain, and carnitine’s active amount is unresolved.

Format
Capsule
Container
90 Veggie Cap(s)
Per serving
$0.83
Customer rating
4.8 · 1,937 ratings
Report analysis

Goals

Energy
Impact
High effect
B- Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 200 mgCoenzyme Q-10 · 200 mg
Study evidence
Magnesium Supportive 4 studies
Cardiovascular Support
Impact
High effect
B- Ingredient FitC PathwaysA- EvidenceA Formulation Logic
Magnesium · 200 mgCoenzyme Q-10 · 200 mgL-Carnitine · 855 mg
Study evidence
Magnesium Supportive 123 studies
Longevity
Impact
High effect
B Ingredient FitD- PathwaysA EvidenceA+ Formulation Logic
Coenzyme Q-10 · 200 mgMagnesium · 200 mg
Study evidence
Magnesium Supportive 12 studies
Impact
High effect
B- Ingredient FitD+ PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 200 mgCoenzyme Q-10 · 200 mg
Study evidence
Magnesium Supportive 61 studies
Impact
Highest effect
B Ingredient FitC PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 200 mgCoenzyme Q-10 · 200 mg
Study evidence
Magnesium Supportive 158 studies
Impact
High effect
C+ Ingredient FitD PathwaysB+ EvidenceA+ Formulation Logic
Magnesium · 200 mg
Study evidence
Magnesium Supportive 114 studies

Ingredients

IngredientAmount per servingScore
Magnesium
200 mg 49
L-Carnitine Fumarate
855 mg 71
Coenzyme Q10 (Ubiquinone)
200 mg 66
Gluten Free Adults 18–50 Vegan Vegetarian
Report overview
D Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value
Each serving provides 200 mg of CoQ10, with a cost that is moderate per serving. It uses ubiquinone. A standard filler is indicated, but not named.
How this ingredient is rated

Active Ingredient Quality & Bioavailability48

It uses ubiquinone, which the body converts to ubiquinol. No qualifying enhanced delivery system or black pepper extract is identified.
Molecular Form: Ubiquinol vs. Ubiquinone
It uses ubiquinone, which the body converts to ubiquinol.
Formulation & Absorption Enhancers
No qualifying enhanced delivery system or black pepper extract is identified.

Dose, Safety & Label Transparency88

The serving provides 200 mg of CoQ10. The available information indicates a standard filler, but does not name it.
Clinical Dosage Alignment
A serving provides 200 mg of ubiquinone.
Label Transparency & Fillers
The available information indicates a standard filler, but does not name it.

Value60

The cost is moderate per serving.
Price Per Effective Serving
The cost is moderate per serving.
L-Carnitine · 855 mg OverallScore71
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value
The serving supplies 500 mg active L-Carnitine at a fairly high whole-product cost relative to that amount. It uses L-Carnitine fumarate. No branded carnitine source or purity grade is stated.
How this ingredient is rated

Active Ingredient Quality & Bioavailability72

The source is L-Carnitine fumarate. No branded carnitine source or purity grade is stated.
Chemical Form and Goal Alignment
The listed form is L-Carnitine fumarate.
Branded Material and Purity Standards
No branded carnitine source or purity grade is stated.

Dose, Safety & Label Transparency90

The label links 500 mg active L-Carnitine to 855 mg of source compound.
Elemental L-Carnitine Dosage
The serving provides 500 mg active L-Carnitine.
Elemental Yield Disclosure
The label links 500 mg active L-Carnitine to 855 mg of source compound.

Value30

The whole-product cost relative to active L-Carnitine is fairly high.
Price per Gram of Elemental L-Carnitine
The whole-product cost per gram of active L-Carnitine is fairly high.
Magnesium · 200 mg OverallScore49
F Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value
+2
A serving provides 200 mg of magnesium at a high whole-product cost per serving. The magnesium is buffered bisglycinate, with magnesium oxide; their proportions are unknown. No specific chelation standard is stated.
How this ingredient is rated

Active Ingredient Quality & Bioavailability25

The magnesium is buffered bisglycinate, with magnesium oxide; their proportions are unknown. No specific chelation standard is stated.
Magnesium Form & Absorption Potential
The magnesium is buffered bisglycinate, with magnesium oxide; their proportions are unknown.
Patented Materials & Chelation Quality
No specific chelation standard is stated.

Dose, Safety & Label Transparency90

The serving provides 200 mg of elemental magnesium. No qualifying supporting nutrient is identified.
Elemental Yield Transparency
The label states the elemental magnesium amount.
Therapeutic Dosage Alignment
The serving provides 200 mg of elemental magnesium.
Synergistic Formulation Logic
No qualifying supporting nutrient is identified.

Value16

The whole-product cost per serving is high.
Price Per Elemental Quality
The whole-product cost per serving is high.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  2. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  3. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  4. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  5. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium
  6. Effects of Coenzyme Q10 Supplementation on Lipid Profiles in Adults: A Meta-analysis of Randomized Controlled Trials.
    Liu Z; Tian Z; Zhao D; Liang Y; Dai S; Liu M; Hou S; Dong X; Zhaxinima; Yang Y · The Journal of clinical endocrinology and metabolism · 2022
    Meta-analysis2,794 participants50 studies pooledCardiovascular Support Heart Health forCoenzyme Q-10
  7. Six-month supplementation with high dose coenzyme Q10 improves liver steatosis, endothelial, vascular and myocardial function in patients with metabolic-dysfunction associated steatotic liver disease: a randomized double-blind, placebo-controlled trial.
    Vrentzos E; Ikonomidis I; Pavlidis G; Katogiannis K; Korakas E; Kountouri A; Pliouta L; Michalopoulou E; Pelekanou E; Boumpas D; Lambadiari V · Cardiovascular diabetology · 2024
    Randomized trial60 participantsCardiovascular Support forCoenzyme Q-10
  8. The effect of coenzyme Q10 on morbidity and mortality in chronic heart failure: results from Q-SYMBIO: a randomized double-blind trial.
    Mortensen SA; Rosenfeldt F; Kumar A; Dolliner P; Filipiak KJ; Pella D; Alehagen U; Steurer G; Littarru GP; Q-SYMBIO Study Investigators · JACC. Heart failure · 2015
    Randomized trial420 participantsCardiovascular Support forCoenzyme Q-10
  9. [Coenzyme Q-10 in the treatment of patients with chronic heart failure and reduced left ventricular ejection fraction: systematic review and meta-analysis].
    Mareev VY; Mareev YV; Begrambekova YL · Kardiologiia · 2022
    Meta-analysis1,139 participants6 studies pooledCardiovascular Support forCoenzyme Q-10
  10. Effect of coenzyme Q10 in Europeans with chronic heart failure: A sub-group analysis of the Q-SYMBIO randomized double-blind trial.
    Mortensen AL; Rosenfeldt F; Filipiak KJ · Cardiology journal · 2020
    Randomized trialCardiovascular Support forCoenzyme Q-10
  11. L-Carnitine supplementation reduces oxidized LDL cholesterol in patients with diabetes.
    Malaguarnera M; Vacante M; Avitabile T; Malaguarnera M; Cammalleri L; Motta M · The American journal of clinical nutrition · 2009
    Randomized trial81 participantsCardiovascular Support Heart Health forL-Carnitine
  12. L-Carnitine's Effect on the Biomarkers of Metabolic Syndrome: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Choi M; Park S; Lee M · Nutrients · 2021
    Meta-analysis9 studies pooledCardiovascular Support Heart Health forL-Carnitine
  13. The Effects of L-Carnitine Supplementation on Weight Loss, Glycemic Control, and Cardiovascular Risk Factors in Patients With Type 2 Diabetes: A Systematic Review and Dose-response Meta-Analysis of Randomized Controlled Trials.
    Mirrafiei A; Jayedi A; Shab-Bidar S · Clinical therapeutics · 2024
    Meta-analysis2,041 participants21 studies pooledCardiovascular Support forL-Carnitine
  14. The Effects of L-Carnitine on Echocardiographic Changes in Patients With β-Thalassemia Major and Intermedia.
    Shahidi M; Hashemi SR; Fattahi N; Roshani D; Vahedi S; Sharifi P; Moradveisi B · Journal of pediatric hematology/oncology · 2020
    Randomized trial60 participantsCardiovascular Support forL-Carnitine
  15. Efficacy and tolerability of combined treatment with L-carnitine and simvastatin in lowering lipoprotein(a) serum levels in patients with type 2 diabetes mellitus.
    Solfrizzi V; Capurso C; Colacicco AM; D'Introno A; Fontana C; Capurso SA; Torres F; Gadaleta AM; Koverech A; Capurso A; Panza F · Atherosclerosis · 2007
    Randomized trial52 participantsCardiovascular Support forL-Carnitine
  16. Circulating and dietary magnesium and risk of cardiovascular disease: a systematic review and meta-analysis of prospective studies.
    Del Gobbo LC; Imamura F; Wu JH; de Oliveira Otto MC; Chiuve SE; Mozaffarian D · The American journal of clinical nutrition · 2013
    Meta-analysis313,041 participants16 studies pooledCardiovascular Support forMagnesium
  17. Magnesium and the risk of cardiovascular events: a meta-analysis of prospective cohort studies.
    Qu X; Jin F; Hao Y; Li H; Tang T; Wang H; Yan W; Dai K · PloS one · 2013
    Meta-analysis532,979 participants19 studies pooledCardiovascular Support forMagnesium
  18. Quantitative Association Between Serum/Dietary Magnesium and Cardiovascular Disease/Coronary Heart Disease Risk: A Dose-Response Meta-analysis of Prospective Cohort Studies.
    Zhao L; Hu M; Yang L; Xu H; Song W; Qian Y; Zhao M · Journal of cardiovascular pharmacology · 2020
    Meta-analysis544,581 participants18 studies pooledCardiovascular Support Heart Health forMagnesium
  19. Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
    Norouzzadeh M; Rashedi MH; Mahdavi-Mazdeh G; Kosari A; Shahinfar H · Current atherosclerosis reports · 2026
    Meta-analysisCardiovascular Support Heart Health forMagnesium
  20. Serum magnesium, mortality, and cardiovascular disease in chronic kidney disease and end-stage renal disease patients: a systematic review and meta-analysis.
    Xiong J; He T; Wang M; Nie L; Zhang Y; Wang Y; Huang Y; Feng B; Zhang J; Zhao J · Journal of nephrology · 2020
    Meta-analysis200,934 participants20 studies pooledCardiovascular Support forMagnesium