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L-Carnitine 500 mg

Swanson Premium Brand
4.7
★ ★ ★ ★ ★
(14372 ratings)
L-Carnitine 500 mg
Product Image
Score86
500 mg of L-carnitine base offers excellent value, but the focused formula has limited pathway coverage.
How scoring works
Quantity:30 Tablet(s) • (30 servings)
Goals:
Cardiovascular Support

Score 86

500 mg of L-carnitine base offers excellent value, but the focused formula has limited pathway coverage.
How scoring works
$5.69($0.18 per serving)
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$ 10.69
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$ 10.69
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$ 5.69
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Analysis

Using L-carnitine base avoids a salt conversion and makes the labeled active amount straightforward. The 500 mg serving is presented in a tablet format for routine use.

No branded purity source is supplied, and the single active does not cover lipids, blood pressure, or vascular antioxidant support. Benefits are most likely when carnitine support is relevant rather than as a universal performance or heart-health effect.

The formula stays focused on fatty-acid transport and cellular energy rather than broad cardiovascular or performance coverage. Excellent value and 30 servings shape the practical appeal.

Who is it for
  • Adults seeking a simple carnitine supplement
  • Users seeking maintenance-level cellular-energy support
Best for
  • Focused fatty-acid transport support
  • Value-conscious carnitine use

Pros

  • Provides 500 mg per labeled serving
  • Clearly identifies L-carnitine base
  • Tablet format
  • Excellent value

Cons

  • No independent purity or testing standard is disclosed
  • No branded raw-material source is identified
  • Supports a narrow metabolic pathway rather than broad cardiovascular coverage

Nutrient quality

86 Highest impact

L-carnitine base provides a direct and clearly stated maintenance amount. No branded purity source or non-active ingredient list is supplied.

Ingredient transparency

86 Highest impact

Active complex amounts and serving details are stated clearly. No branded purity source or non-active ingredient list is supplied.

Customer satisfaction

72 High impact

The supplied average rating is strong, and a very large response volume makes the average rating more stable. No comment-level feedback is supplied to judge recurring complaints or purpose-specific experiences.

Value for money

96 Highest impact

The straightforward active is offered at excellent value. Formula focus and disclosure determine whether that value holds up in practice.

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Goals

Cardiovascular Support
Cardiovascular Support
Impact
High effect
C+ Goal FitC Strength of SupportF CoverageA+ Formula Quality
L-Carnitine · 500 mg

L-Carnitine supports fatty-acid transport into mitochondria and is relevant to heart-muscle energy. Evidence for cardiovascular benefit is more limited and condition-specific than for CoQ10 or omega-3 fats.

The single-tablet amount is clear but modest compared with many studied supplemental intakes. The simple formula provides focused metabolic support without covering lipids, vascular tone, or antioxidant protection.

Study evidence
L-Carnitine Supportive 73 studies

Ingredients

IngredientAmount per serving
L-Carnitine base
500 mg
Adults 18–50
Report overview
L-Carnitine · 500 mg OverallScore81
C Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value

Pure L-carnitine base provides a clear maintenance dose in a direct active form. The source is generic and lacks branded purity assurance, but no salt conversion is needed to understand the elemental amount. Very low cost per gram makes it an efficient choice for straightforward carnitine supplementation.

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82 Performance

L-Carnitine + Tartrate

ALLMAX
L-carnitine tartrate provides a focused amount for exercise recovery and energy metabolism, with pantothenic acid offering compatible support; its form and goal fit provide a clearer option when the original already has a credible carnitine profile. Clear doses, a concise formula, and favorable serving economics make it a practical option despite the missing elemental carnitine yield.
82 Performance

L-Carnitine 500 mg

NOW
L-carnitine tartrate provides a clear maintenance amount in a form well suited to exercise recovery; its form and goal fit provide a clearer option when the original already has a credible carnitine profile. No branded purity source or non-active ingredient list is supplied.
84 Performance

Mega-Liposomal R-ALA Organic Fruit Flavor

Aurora NutraScience
R-alpha lipoic acid, CoQ10, and L-carnitine create a coherent, meaningfully dosed cellular-energy formula; its form and goal fit provide a clearer option when the original already has a credible carnitine profile. Liposomal delivery is promising, but unspecified CoQ10 and carnitine forms plus premium serving value temper the strengths.
83 Budget

L-Carnitine 500 mg

Swanson
L-carnitine base provides a direct maintenance amount with clearly listed calcium; the lower serving cost improves economy when the original already has a credible carnitine profile. No branded purity source or non-active ingredient list is supplied.
87 Budget

L-Carnitine

NOW
L-carnitine tartrate provides a useful maintenance amount in a flexible liquid form; the lower serving cost improves economy when the original already has a credible carnitine profile. No branded purity source or non-active ingredient list is supplied.
81 Budget

L-Carnitine Fumarate With Biosint Carnitines 855 mg

Doctor's Best
The branded Biosint fumarate source adds credible purity assurance and fits cardiovascular energy support; it is among the lowest-cost eligible options, although it is not cheaper than the original when the original already has a credible carnitine profile. The label gives compound weight rather than a directly stated elemental yield.
87 Value

L-Carnitine 500 mg

NOW
L-carnitine tartrate provides a clear maintenance amount in a form well suited to exercise recovery; the quality-to-cost balance is favorable when the original already has a credible carnitine profile. No branded purity source or non-active ingredient list is supplied.
77 Value

L-Carnitine Fumarate 855 mg

Doctor's Best
L-carnitine fumarate is a stable form that fits cardiovascular energy support; the quality-to-cost balance is favorable when the original already has a credible carnitine profile. The label gives salt weight rather than a directly stated elemental yield.
81 Value

L-Carnitine 500 mg

Jarrow Formulas
L-carnitine tartrate provides a clear maintenance amount in an exercise-oriented form; the quality-to-cost balance is favorable when the original already has a credible carnitine profile. No branded purity source or non-active ingredient list is supplied.
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Sources

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

  1. 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
  2. The Effects of L-Carnitine Supplementation on Serum Lipids: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Fathizadeh H; Milajerdi A; Reiner Ž; Kolahdooz F; Chamani M; Amirani E; Asemi Z · Current pharmaceutical design · 2020
    Meta-analysis67 studies pooledCardiovascular Support forL-Carnitine
  3. 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 forL-Carnitine
  4. 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 forL-Carnitine
  5. 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
  6. 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