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Liquid L-Carnitine Natural Raspberry Flavor

Nature's Answer
4.7
★ ★ ★ ★ ★
(164 ratings)
L-Carnitine 1200 mg
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Score75
1,200 mg of L-carnitine of an unspecified form offers moderate value, but missing form details weaken quality confidence.
How scoring works
Quantity:16 Liquid(s) • (32 servings)
Goals:
Heart Health
Fitness
Cardiovascular Support

Score 75

1,200 mg of L-carnitine of an unspecified form offers moderate value, but missing form details weaken quality confidence.
How scoring works
$21.74($0.67 per serving)
iHerb
$ 21.74
Pure Formulas
$ 21.74
Vitacost
$ 21.74
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Analysis

The active amount is clearly stated and reaches a useful targeted range, while liquid delivery allows flexible use. The 1,200 mg serving is presented in a raspberry-flavored liquid format for routine use.

The label does not identify the carnitine form or purity source, so alignment with the best-characterized forms cannot be confirmed. Benefits are most likely when carnitine support is relevant rather than as a universal performance or heart-health effect.

Pantothenic acid supports general energy metabolism, while 4 grams of carbohydrate adds a small nutritional trade-off rather than a major performance benefit. The formula remains centered on carnitine rather than broad cardiovascular or performance coverage. Moderate value and 32 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 1,200 mg per labeled serving
  • Simple carnitine-focused formula
  • Raspberry-flavored liquid format
  • Moderate value

Cons

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

Warnings

  • L-carnitine at this amount may cause nausea, abdominal cramps, diarrhea, or a fishy body odor in sensitive users.
  • People treated for low thyroid function should seek medication-specific advice because L-carnitine may oppose some thyroid-hormone activity.
  • People with a seizure disorder should discuss high-dose L-carnitine with a clinician because increased seizure activity has been reported in susceptible users.

Nutrient quality

77 High impact

The substantial stated carnitine amount is paired with a clearly dosed supporting vitamin. The chemical form, elemental-yield basis, and non-active ingredients are not supplied.

Ingredient transparency

78 High impact

Active complex amounts and serving details are stated clearly. The chemical form, elemental-yield basis, and non-active ingredients are not supplied.

Customer satisfaction

68 High impact

The supplied average rating is 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

75 High impact

Liquid convenience supports fair value despite incomplete sourcing. Formula focus and disclosure determine whether that value holds up in practice.

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Goals

Heart Health
Impact
High effect
C+ Goal FitA- Strength of SupportC CoverageA Formula Quality

L-carnitine supports fatty-acid transport and may aid cellular energy in high-demand heart tissue. The 1,200 mg liquid serving is clearly disclosed and reaches a meaningful targeted amount.

Evidence for broad cardiovascular prevention is limited, so the formula is more situational than foundational. Pantothenic acid complements energy metabolism without creating a separate major heart pathway.

Study evidence
L-Carnitine Supportive 84 studies
Fitness
Impact
High effect
B Goal FitC+ Strength of SupportC- CoverageB+ Formula Quality

L-carnitine supports mitochondrial fatty-acid transport and may reduce some markers of exercise-related muscle damage. The liquid supplies a meaningful amount with exact active disclosure.

The chemical form is not identified, preventing assessment of whether it matches the best-supported athletic form. Carbohydrate and pantothenic acid add modest support but do not compensate for the form uncertainty.

Study evidence
L-Carnitine Supportive 52 studies
Cardiovascular Support
Impact
High effect
C Goal FitB- Strength of SupportD+ CoverageB+ Formula Quality
L-Carnitine · 1200 mg

A clearly stated 1,200 mg L-carnitine serving may support fatty-acid transport and heart-muscle energy. The dose is meaningful, but the chemical form and active yield are not disclosed.

Clinical cardiovascular evidence is narrower and less consistent than for omega-3s or CoQ10. The formula does not address lipids, blood pressure, rhythm, or endothelial function beyond its single energy pathway.

Study evidence
L-Carnitine Supportive 73 studies

Ingredients

IngredientAmount per serving
Calories
15 {Calories}
Total Carbohydrates
4 Gram(s)
Pantothenic Acid (D-Calcium Pantothenate)
10 mg
L-Carnitine
1200 mg
Adults 18–50
Report overview
L-Carnitine · 1200 mg OverallScore49
F Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyB+ Value

The 1,200 mg amount reaches the preferred range for heart and athletic support. The undisclosed chemical form prevents judging whether the ingredient is aligned with those goals or how its yield was determined. Cost per disclosed gram is moderate, while the liquid format may offer convenient dose adjustment.

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Sources

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

  1. Safety and efficacy of L-carnitine supplementation in improving cardiac function of hemodialysis patients: a systematic review and meta-analysis.
    Nabi R; Farooqi HA; Abbasi SUAM; Rajpar NA; Munir A; Ahmed HB; Iqbal U; Zahid T; Nabi Z · International urology and nephrology · 2025
    Meta-analysis426 participants23 studies pooledHeart Health forL-Carnitine
  2. 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 Heart Health forL-Carnitine
  3. 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
  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 pooledHeart Health Cardiovascular Support forL-Carnitine
  5. Acute L-Carnitine Supplementation Does Not Improve CrossFit® Performance: A Randomized, Double-Blind, Placebo-Controlled Crossover Study.
    Devrim-Lanpir A; Velasco LS; Ramirez Lara FG; Ojeda Sanchez A; Kimble R; Zare R; Gunes FE; Knechtle B; Weiss K; Rosemann T; Heinrich K · Nutrients · 2025
    Randomized trial20 participantsFitness forL-Carnitine
  6. Oral acetyl-L-carnitine therapy reduces fatigue in overt hepatic encephalopathy: a randomized, double-blind, placebo-controlled study.
    Malaguarnera M; Vacante M; Giordano M; Pennisi G; Bella R; Rampello L; Malaguarnera M; Li Volti G; Galvano F · The American journal of clinical nutrition · 2011
    Randomized trial121 participantsFitness forL-Carnitine
  7. 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
  8. 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
  9. Trimethylamine N-Oxide and Related Gut Microbe-Derived Metabolites and Incident Heart Failure Development in Community-Based Populations.
    Tang WHW; Lemaitre RN; Jensen PN; Wang M; Wang Z; Li XS; Nemet I; Lee Y; Lai HTM; de Oliveira Otto MC; Fretts AM; Sotoodehnia N; DiDonato JA; Bäckhed F; Psaty BM; Siscovick DS; Budoff MJ; Mozaffarian D; Hazen SL · Circulation. Heart failure · 2024
    Cohort study11,768 participantsHeart Health forL-Carnitine
  10. Efficacy of a novel formulation of L-Carnitine, creatine, and leucine on lean body mass and functional muscle strength in healthy older adults: a randomized, double-blind placebo-controlled study.
    Evans M; Guthrie N; Pezzullo J; Sanli T; Fielding RA; Bellamine A · Nutrition & metabolism · 2020
    Randomized trial42 participantsFitness forL-Carnitine
  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. 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
  13. 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
  14. A systematic review and meta-analysis of propionyl-L-carnitine effects on exercise performance in patients with claudication.
    Brass EP; Koster D; Hiatt WR; Amato A · Vascular medicine (London, England) · 2013
    Meta-analysis13 studies pooledFitness forL-Carnitine
  15. Prolonged oral L-carnitine substitution increases bicycle ergometer performance in patients with severe, ischemically induced cardiac insufficiency.
    Löster H; Miehe K; Punzel M; Stiller O; Pankau H; Schauer J · Cardiovascular drugs and therapy · 2000
    Randomized trial41 participantsFitness forL-Carnitine
  16. L-Carnitine treatment reduces severity of physical and mental fatigue and increases cognitive functions in centenarians: a randomized and controlled clinical trial.
    Malaguarnera M; Cammalleri L; Gargante MP; Vacante M; Colonna V; Motta M · The American journal of clinical nutrition · 2008
    Randomized trial66 participantsFitness forL-Carnitine
  17. Effects of nine weeks L-Carnitine supplementation on exercise performance, anaerobic power, and exercise-induced oxidative stress in resistance-trained males.
    Koozehchian MS; Daneshfar A; Fallah E; Agha-Alinejad H; Samadi M; Kaviani M; Kaveh B M; Jung YP; Sablouei MH; Moradi N; Earnest CP; Chandler TJ; Kreider RB · Journal of exercise nutrition & biochemistry · 2020
    Randomized trial23 participantsFitness forL-Carnitine
  18. Effects of L-carnitine administration on left ventricular remodeling after acute anterior myocardial infarction: the L-Carnitine Ecocardiografia Digitalizzata Infarto Miocardico (CEDIM) Trial.
    Iliceto S; Scrutinio D; Bruzzi P; D'Ambrosio G; Boni L; Di Biase M; Biasco G; Hugenholtz PG; Rizzon P · Journal of the American College of Cardiology · 1995
    Randomized trial472 participantsHeart Health forL-Carnitine
  19. The effect of L-carnitine supplementation on lipid profile in adults: an umbrella meta-analysis on interventional meta-analyses.
    Musazadeh V; Alinejad H; Esfahani NK; Kavyani Z; Keramati M; Roshanravan N; Mosharkesh E; Dehghan P · Frontiers in nutrition · 2023
    Meta-analysis13 studies pooledHeart Health forL-Carnitine
  20. The effects of L-carnitine supplementation on cardiovascular risk factors in participants with impaired glucose tolerance and diabetes: a systematic review and dose-response meta-analysis.
    Gheysari R; Nikbaf-Shandiz M; Hosseini AM; Rasaei N; Hosseini S; Bahari H; Asbaghi O; Rastgoo S; Goudarzi K; Shiraseb F; Behmadi R · Diabetology & metabolic syndrome · 2024
    Meta-analysis2,900 participants21 studies pooledHeart Health forL-Carnitine