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L-Carnitine 500 mg

Jarrow Formulas
4.7
★ ★ ★ ★ ★
(17 ratings)
L-Carnitine 500 mg
Product Image
Score73
500 mg of L-carnitine of an unspecified form offers good value, but missing form details weaken quality confidence.
How scoring works
Quantity:100 Veggie Licap(s) • (100 servings)
Goals:
Cardiovascular Support

Score 73

500 mg of L-carnitine of an unspecified form offers good value, but missing form details weaken quality confidence.
How scoring works
$27.67($0.27 per serving)
Daily Vita
$ 27.67
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Analysis

The simple formula provides a clearly stated maintenance amount in a convenient long-supply format. The 500 mg serving is presented in a vegetable liquid-filled capsule format for routine use.

The carnitine form and raw-material standard are not identified, leaving bioavailability and source quality uncertain. 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. Good value and 100 servings shape the practical appeal.

Who is it for
  • Adults who prefer liquid carnitine
  • 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
  • Simple carnitine-focused formula
  • Vegetable liquid-filled capsule format
  • Good value

Cons

  • Chemical form is not disclosed
  • No branded raw-material source is identified
  • Supports a narrow metabolic pathway rather than broad cardiovascular coverage

Nutrient quality

74 High impact

The stated carnitine amount reaches a useful maintenance level. The chemical form and source quality are missing, and the customer evidence base is small.

Ingredient transparency

76 High impact

Active complex amounts and serving details are stated clearly. The chemical form and source quality are missing, and the customer evidence base is small.

Customer satisfaction

56 Moderate impact

The supplied average rating is strong, and a small response volume makes the average rating less reliable. No comment-level feedback is supplied to judge recurring complaints or purpose-specific experiences.

Value for money

85 Highest impact

Favorable serving cost is the clearest value strength. Formula focus and disclosure determine whether that value holds up in practice.

Report analysis

Goals

Cardiovascular Support
Cardiovascular Support
Impact
Moderate effect
D+ Goal FitC+ Strength of SupportD- CoverageA+ Formula Quality
L-Carnitine · 500 mg

L-carnitine supports fatty-acid transport and cellular energy, which gives it an indirect cardiovascular role. The serving supplies a useful maintenance amount in a very simple formula.

The chemical form and purity details are not disclosed, limiting confidence in active quality. Evidence for broad cardiovascular benefit in healthy users is less direct than for omega-3s, CoQ10, or magnesium.

Study evidence
L-Carnitine Supportive 73 studies

Ingredients

IngredientAmount per serving
L-Carnitine
500 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
L-Carnitine · 500 mg OverallScore40
F Active Ingredient Quality & BioavailabilityC- Dose, Safety & Label TransparencyB+ Value

The listed carnitine amount reaches a useful maintenance level, but its chemical form is not disclosed. Missing form and yield details prevent confirmation of goal alignment and purity. Cost per listed gram is favorable, making value the main strength.

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Loading alternative details
78 Performance

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; its form and goal fit provide a clearer option when the original has weak form disclosure or limited carnitine-specific quality. The label gives compound weight rather than a directly stated elemental yield.
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 has weak form disclosure or limited carnitine-specific quality. 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 has weak form disclosure or limited carnitine-specific quality. No branded purity source or non-active ingredient list is supplied.
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 weak form disclosure or limited carnitine-specific quality. No branded purity source or non-active ingredient list is supplied.
84 Budget

L-Carnitine 500 mg

Swanson Premium Brand
L-carnitine base provides a direct and clearly stated maintenance amount; the lower serving cost improves economy when the original has weak form disclosure or limited carnitine-specific quality. 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 weak form disclosure or limited carnitine-specific quality. 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 weak form disclosure or limited carnitine-specific quality. 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 has weak form disclosure or limited carnitine-specific quality. 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 has weak form disclosure or limited carnitine-specific quality. 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 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
  2. Blood Pressure and Metabolic Effects of Acetyl-l-Carnitine in Type 2 Diabetes: DIABASI Randomized Controlled Trial.
    Parvanova A; Trillini M; Podestà MA; Iliev IP; Aparicio C; Perna A; Peraro F; Rubis N; Gaspari F; Cannata A; Ferrari S; Bossi AC; Trevisan R; Parameswaran S; Chávez-Iñiguez JS; Masnic F; Seck SM; Jiamjariyaporn T; Cortinovis M; Perico L; Sharma K; Remuzzi G; Ruggenenti P; Warnock DG · Journal of the Endocrine Society · 2022
    Randomized trial229 participantsCardiovascular Support forL-Carnitine
  3. 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
  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. Associations of circulating choline and its related metabolites with cardiometabolic biomarkers: an international pooled analysis.
    Pan XF; Yang JJ; Shu XO; Moore SC; Palmer ND; Guasch-Ferré M; Herrington DM; Harada S; Eliassen H; Wang TJ; Gerszten RE; Albanes D; Tzoulaki I; Karaman I; Elliott P; Zhu H; Wagenknecht LE; Zheng W; Cai H; Cai Q; Matthews CE; Menni C; Meyer KA; Lipworth LP; Ose J; Fornage M; Ulrich CM; Yu D · The American journal of clinical nutrition · 2021
    Meta-analysis32,853 participants17 studies pooledCardiovascular Support forL-Carnitine
  6. 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
  7. 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
  8. 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
  9. 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