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L-Carnitine 500 mg

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4.8
★ ★ ★ ★ ★
(171 ratings)
L-Carnitine 500 mg
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Score82
500 mg of L-carnitine tartrate offers only moderate value, but the focused formula has limited pathway coverage.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Cardiovascular Support

Score 82

500 mg of L-carnitine tartrate offers only moderate value, but the focused formula has limited pathway coverage.
How scoring works
$27.00($0.45 per serving)
Pure Formulas
$ 27.00
iHerb
$ 27.00
Vitacost
$ 27.00
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Analysis

The fully identified tartrate form offers a clear, focused route to fatty-acid transport and exercise recovery. The 500 mg serving is presented in a capsule format for routine use.

No branded purity standard is stated, and the same dose is available in more economical alternatives. 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. Only moderate value and 60 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 tartrate
  • Capsule format
  • Only moderate 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
  • Value is weaker than several comparable options

Nutrient quality

88 Highest impact

L-carnitine tartrate provides a clear maintenance amount in a suitable exercise-oriented form. No branded purity source or non-active ingredient list is supplied.

Ingredient transparency

87 Highest impact

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

Customer satisfaction

69 High impact

The supplied average rating is very strong, and a solid response volume provides reasonable confidence in the average rating. No comment-level feedback is supplied to judge recurring complaints or purpose-specific experiences.

Value for money

77 High impact

Formula quality is sound, though serving value is only moderate. Formula focus and disclosure determine whether that value holds up in practice.

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Goals

Cardiovascular Support
Cardiovascular Support
Impact
High effect
B- Goal FitB Strength of SupportD CoverageA+ Formula Quality
L-Carnitine · 500 mg

L-carnitine supports fatty-acid transport into mitochondria, a process relevant to the heart’s high energy demand. Human cardiovascular evidence is most applicable to selected clinical or deficiency contexts rather than general prevention.

The 500 mg amount provides a practical maintenance-level serving, and L-carnitine tartrate is fully identified. The single-ingredient capsule offers focused energy support without addressing vascular tone, lipids, or antioxidant defense.

Study evidence
L-Carnitine Supportive 73 studies

Ingredients

IngredientAmount per serving
L-Carnitine (L-Carnitine Tartrate)
 500 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
L-Carnitine (L-Carnitine Tartrate) · 500 mg OverallScore77
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyC Value

L-carnitine tartrate is well suited to fitness and exercise-recovery goals. The 500 mg elemental amount provides an effective maintenance serving with clear source-form disclosure. The generic material lacks a named purity standard, and its cost per active gram is only moderate.

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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 has moderate dose, form, or yield uncertainty. 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 has moderate dose, form, or yield uncertainty. Liposomal delivery is promising, but unspecified CoQ10 and carnitine forms plus premium serving value temper the strengths.
78 Performance

L-Carnitine 500 mg

Natural Factors
L-carnitine tartrate provides a clear maintenance amount in a suitable exercise-oriented form; its form and goal fit provide a clearer option when the original has moderate dose, form, or yield uncertainty. 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 has moderate dose, form, or yield uncertainty. No branded purity source or non-active ingredient list is supplied.
86 Budget

L-Carnitine + Tartrate

ALLMAX
L-carnitine tartrate provides a focused amount for exercise recovery and energy metabolism, with pantothenic acid offering compatible support; the lower serving cost improves economy when the original has moderate dose, form, or yield uncertainty. Clear doses, a concise formula, and favorable serving economics make it a practical option despite the missing elemental carnitine yield.
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 has moderate dose, form, or yield uncertainty. No branded purity source or non-active ingredient list is supplied.
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 has moderate dose, form, or yield uncertainty. No branded purity source or non-active ingredient list is supplied.
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 has moderate dose, form, or yield uncertainty. No branded purity source or non-active ingredient list is supplied.
84 Value

L-Carnitine 500 mg

Swanson Premium Brand
L-carnitine base provides a direct and clearly stated maintenance amount; the quality-to-cost balance is favorable when the original has moderate dose, form, or yield uncertainty. 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. Effective dosing of L-carnitine in the secondary prevention of cardiovascular disease: a systematic review and meta-analysis.
    Shang R; Sun Z; Li H · BMC cardiovascular disorders · 2015
    Meta-analysis3,108 participants5 studies pooledCardiovascular Support forL-Carnitine
  2. 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
  3. 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
  4. Intestinal microbiota metabolism of L-carnitine, a nutrient in red meat, promotes atherosclerosis.
    Koeth RA; Wang Z; Levison BS; Buffa JA; Org E; Sheehy BT; Britt EB; Fu X; Wu Y; Li L; Smith JD; DiDonato JA; Chen J; Li H; Wu GD; Lewis JD; Warrier M; Brown JM; Krauss RM; Tang WH; Bushman FD; Lusis AJ; Hazen SL · Nature medicine · 2013
    Other2,595 participantsCardiovascular Support forL-Carnitine
  5. 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
  6. 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
  7. 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
  8. 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