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L-Carnitine Fumarate 855 mg

Doctor's Best

4.6
(11274 ratings)
L-Carnitine 855 mg
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Score 90.0

A premium L-Carnitine Fumarate supplement from a highly trusted brand, ideal for heart health and energy metabolism, offering strong dosage and excellent value.

Quantity: 180 Veggie Cap(s)Servings size: 1 Veggie Capsule(s) (180 servings)
Selected goals:
Other goals:
Fitness
Heart Health
Cognitive Support
Weight Loss

Score 90.0

A premium L-Carnitine Fumarate supplement from a highly trusted brand, ideal for heart health and energy metabolism, offering strong dosage and excellent value.

Analysis

Doctor's Best L-Carnitine Fumarate 855 mg provides a specialized form of L-Carnitine distinct from Tartrate, focusing on cardiovascular support due to the inclusion of fumaric acid, a key component in the Krebs cycle for energy production. This makes it particularly effective for heart muscle function. Doctor's Best is a brand well-known for its science-based supplements and quality ingredients, which is strongly supported by the product's immense volume of positive customer reviews. The dosage of 855mg is substantial, offering potent support for its intended goals.

Pros
  • Utilizes L-Carnitine Fumarate, a specialized form particularly beneficial for heart health and cellular energy.
  • From Doctor's Best, a highly reputable brand known for quality and scientifically-backed formulations.
  • Exceptional number of positive reviews, indicating widespread customer satisfaction and effectiveness.
  • Provides a robust 855mg dose, ensuring potent support for its targeted goals.
  • Competitive price per serving for a specialized and high-quality L-Carnitine form.
Cons
  • While beneficial for general fitness, L-Carnitine Tartrate is sometimes more commonly chosen for specific athletic performance and recovery studies.
  • As with other L-Carnitine forms, Acetyl-L-Carnitine (ALCAR) is generally preferred for direct cognitive enhancement.
Warnings
  • Individuals with thyroid conditions should consult a healthcare professional, as L-Carnitine can interact with thyroid hormones.
  • May cause mild gastrointestinal discomfort in sensitive individuals; starting with a lower dose is advisable.
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
L-Carnitine Fumarate
855 mg
Gluten Free Adults 18–50 Vegan Vegetarian
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Categories

As an L-Carnitine product, it stands out for its specialized Fumarate form, high dosage, excellent brand reputation, and competitive pricing, making it a top-tier choice within the L-Carnitine category, especially for heart-focused benefits.

Goals

This form is exceptionally well-suited for heart health due to fumaric acid's role in the Krebs cycle, which is vital for efficient energy production in cardiac muscle cells. The 855mg dosage provides strong, targeted support for cardiovascular function.
While L-Carnitine Fumarate supports energy metabolism essential for exercise, L-Carnitine Tartrate is more commonly the focus for direct athletic performance and recovery benefits. Still, it effectively contributes to overall energy and recovery.
L-Carnitine aids in fatty acid transport, and this form provides a good dose for metabolic support, which can indirectly assist weight management when combined with a balanced diet and regular exercise regimen.
90 Value

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Diet Support

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L-Carnitine Fumarate With Biosint Carnitines 855 mg

Doctor's Best
4.6
(11543 ratings)
Offers an identical specific form and dosage of L-Carnitine from the same trusted brand at a slightly higher price (28 cents vs 22 cents), still providing excellent value for a product with a strong focus on heart health.
85 Value

L-Carnitine 500 mg

NOW
4.7
(7429 ratings)
While a different L-Carnitine form, it provides a solid dose from a highly reputable brand at a very competitive price per serving (21 cents), offering good overall value for L-Carnitine supplementation.
88 Value

L-Carnitine 500 mg

Jarrow Formulas
4.6
(1482 ratings)
Provides a high-quality L-Carnitine Tartrate product at a very reasonable price (19 cents per serving), representing excellent value from a reputable brand for general L-Carnitine benefits.
90 Performance

L-Carnitine Fumarate With Biosint Carnitines 855 mg

Doctor's Best
4.6
(11543 ratings)
This is a very similar product from the same trusted brand, potentially offering a slightly different formulation ('Biosint Carnitines') which could be perceived as 'better' or a specialized version for certain users, maintaining high efficacy.
40 Performance

Mega-Liposomal R-ALA Organic Fruit Flavor

Aurora NutraScience
4.4
(669 ratings)
While listed with an anomalous high price per serving, this complex provides L-Carnitine (1000mg) along with R-ALA and CoQ10 in a liposomal form for superior absorption and broader benefits for energy, antioxidant, and heart health, offering a more advanced synergistic option.
85 Performance

Clinical Cardio

NOW
4.8
(416 ratings)
Though offering a lower L-Carnitine dose (250mg), its inclusion of CoQ10, Hawthorn extract, and Vitamin K2 makes it a more multi-faceted and targeted supplement specifically formulated for comprehensive cardiovascular health.
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