What is the recommended dosage for L-Carnitine?

General: 500-2,000 mg/day; Weight Management: 2,000-3,000 mg/day L-carnitine L-tartrate; Exercise Performance: 2,000 mg/day

What are the side effects of L-Carnitine?

Potential side effects include: Fishy body odor, Nausea, Diarrhea, Abdominal cramps.

What is L-carnitine and how may it support weight management?

L-carnitine is an amino acid derivative that plays a role in transporting fatty acids into mitochondria for energy production. A 2020 meta-analysis of 37 RCTs found that L-carnitine supplementation was associated with modest reductions in body weight. Results varied based on dosage and study population.

What dosage of L-carnitine has been studied for weight management?

Clinical trials have used 1–3 grams of L-carnitine per day, with 2 grams being the most common dose. Both L-carnitine L-tartrate and acetyl-L-carnitine forms have been studied. Trial durations typically ranged from 8 to 24 weeks.

What are the potential side effects of L-carnitine supplements?

Common side effects include nausea, abdominal cramps, vomiting, and diarrhea. High doses (above 3 grams daily) may produce a fishy body odor. Some research suggests that gut bacteria can convert L-carnitine to trimethylamine N-oxide (TMAO), which has been associated with cardiovascular risk.

L-Carnitine
L-Carnitine

fat_metabolism

Também conhecido como: Acetyl-L-Carnitine (ALCAR), L-Carnitine L-Tartrate (LCLT), Propionyl-L-Carnitine, Carnitine

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About

An essential cofactor for transporting long-chain fatty acids into mitochondria for energy production. Meta-analyses of 37 RCTs demonstrate that L-carnitine supplementation may support healthy body weight and body composition, particularly when combined with physical activity.

How It Works

Essential cofactor for carnitine palmitoyltransferase (CPT) enzyme system, which transports long-chain fatty acids across the mitochondrial membrane for beta-oxidation. Without adequate carnitine, fatty acids cannot enter mitochondria for energy production. Also supports pyruvate dehydrogenase activity, improving overall substrate utilization.

Evidence For Conditions

Condição	Nota	Estudos	Participantes
Fat Oxidation Enhancement	B	37	2292	Ver →
Exercise Performance for Weight Loss	C	8	400	Ver →

Side Effects

Fishy body odor
Nausea
Diarrhea
Abdominal cramps

Drug & Supplement Interactions

Thyroid hormones (may reduce effectiveness)
Anticoagulants (may enhance effect)
Acenocoumarol

Informe sempre o seu profissional de saúde sobre todos os suplementos que você toma.Sempre informe seu profissional de saúde sobre todos os suplementos que você toma.

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Dados Rápidos

Dosagem: General: 500-2,000 mg/day; Weight_Management: 2,000-3,000 mg/day L-carnitine L-tartrate; Exercise_Performance: 2,000 mg/day
Formas: capsule tablet liquid powder
Fontes Naturais: Red meat (beef, lamb), Pork, Poultry, Fish, Dairy products
Limite Superior: 3,000 mg/day; higher doses may cause fishy body odor, nausea, diarrhea
Melhor Horário: With carbohydrate-containing meals (insulin enhances muscle uptake); or pre-exercise

Resumo das Evidências

Fat Oxidation Enhancement B

Exercise Performance for Weight Loss C

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Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.