L-Carnitine

AOR04270

Soutien du métabolisme des graisses

  • Améliore les niveaux d’énergie, la performance et la récupération post-exercice
  • Favorise la combustion des graisses
  • Soutient la santé cardiovasculaire et l’immunité
  • Dose et forme cliniquement efficaces
Sans Gluten
Sans OGM
Végétalien

$39.94

En stock

La L-carnitine est un acide aminé nécessaire à la combustion des graisses, à la production d’énergie et à la récupération musculaire. Elle est synthétisée par l’organisme à partir des acides aminés essentiels lysine et méthionine, et peut également être obtenue à partir de la viande rouge. C’est pour cela que la carence en L-carnitine est assez courante chez les végétariens et même chez les personnes qui évitent de consommer de la viande rouge simplement pour préserver leur santé. La L-Carnitine joue un rôle central dans la dégradation métabolique de certains acides gras, puis leur transport vers les mitochondries qui constituent des centrales électriques à l’intérieur des cellules, afin d’être utilisée pour la production d’énergie.

La L-carnitine est principalement utilisée pour favoriser la perte de poids, augmenter la production d’énergie ou améliorer la récupération musculaire après une séance d’entraînement. Elle est essentielle au bon déroulement du métabolisme, qui à son tour est essentiel à la réduction du risque de nombreux troubles liés à l’âge et au mode de vie. Les études humaines utilisant la L-carnitine administrée oralement ont produit des résultats positifs significatifs dans les domaines suivants : anorexie nerveuse, syndrome métabolique, problèmes cardiovasculaires, hypercholestérolémie, hyperglycémie, syndrome de fatigue chronique, dysfonction thyroïdienne et problèmes rénaux, entre autres.

Les athlètes, les amateurs de sport et les patients qui souhaitent améliorer leur capacité fonctionnelle peuvent tirer profit d’un supplément de carnitine, ainsi que ceux qui sont à la recherche d’un soutien métabolique. Les végétariens et personnes qui ne consomment pas de la viande rouge peuvent prendre des suppléments de carnitine pour optimiser leurs santé, niveaux d’énergie, fonction musculaire et favoriser une utilisation optimale des graisses.

Avantage AOR

L-Carnitine d’AOR fournit une dose élevée de L-carnitine pure pour un soutien efficace du métabolisme, la récupération musculaire, la production d’énergie et la santé générale.

NPN

80039406

Discussion

L-carnitine, un dérivé de l’acide aminé lysine, favorise le métabolisme des matières grasses, ralentit la sensation de fatigue pendant l’activité physique et contribue à améliorer la performance physique pendant les périodes d’entraînement. L-Carnitine favorise la récupération musculaire pendant les exercices de résistance en encourageant la capacité antioxydante, en réduisant les dommages des tissus musculaires et en favorisant la guérison de ceux-ci.

Certifie

AOR certifie que tous les ingrédients sont mentionnés sur l’étiquette.  Ne contient ni blé, ni gluten, ni maïs, ni noix, ni arachide, ni graine de sésame, ni sulfite, ni moutarde, ni produit laitier, ni soja, ni œuf, ni poisson, ni mollusque, ni crustacé ou produit d’origine animale.

Posologie Adulte

Prendre deux capsules par jour avec de la nourriture, ou selon les recommandations d’un professionnel de la santé.

Mises en Garde

Consulter un professionnel de la santé avant d’utiliser ce produit si vous êtes enceinte ou si vous allaitez, si vous souffrez d’une maladie du foie ou des reins ou d’un trouble convulsif.

Main Applications
  • Energy/Fatigue
  • Athletic performance
  • Cardiovascular health
  • Weight management
Avertissement

Les renseignements sur les produits contenus dans ce site web, y compris la description des produits, leurs effets potentiels et leurs avantages sont destinés à des fins d’information uniquement. Ils ne sont pas destinés à donner ou remplacer les renseignements médicaux ou l’avis d’un professionnel qualifié. Consulter votre médecin pour tout problème de santé

Portion: une capsule
L-Carnitine (tartrate)
500 mg

† Unité formant colonie

Ingrédients non médicinaux : cellulose microcristalline.

Most studies examining the clinical potential of L-carnitine have used exogenous, supplemental L-carnitine, and these have produced significant findings. These findings include human studies on anorexia nervosa, athletic performance, angina, ischemia, peripheral vascular disease, cardiomyopathy, myocardial infarctions, hyperlipidemia, blood sugar instability, chronic fatigue syndrome, hepatitis, HIV, hyperthyroidism, and renal failure. In the latter, l-carnitine use is even recommended by the National Kidney Foundation for the alleviation of anemia associated with chronic renal failure. Anemia is a symptom targeted by L-carnitine supplementation in anorexia nervosa patients as well, improving weight gain, physical performance and appetite in combination with adenosylcobalamin (a cofactor of B12).Cardiovascular ConditionsL-carnitine also increased walking time for peripheral vascular disease patients by nearly 80% in one double-blind, placebo-controlled study, while significantly increasing the survival rate among cardiogenic shock patients in two others. Long-term supplementation among heart patients have produced improvements in ejection fraction, Weber classification (a standardized test of cardiac performance), peak VO2 consumption, arterial and pulmonary blood pressure, and cardiac output. This is in addition to decreasing the mortality rate among myocardial infarction survivors by 12.5% after a year of L-carnitine supplementation at 4 grams daily, according to one study.Blood Lipids and Blood Sugar LevelsHyperlipidemia, a condition characterized by excess levels of fat in the blood (and a major force behind a poor HDL/LDL ratio of cholesterol), has also been targeted by L-carnitine research, with most studies showing 2 grams to be an effective daily dose for reducing triglyceride levels, either as an adjuvant or stand-alone therapy. Injections of L-carnitine have also been used among diabetics to successfully improve insulin sensitivity and alleviate the symptoms of diabetic neuropathy.In patients with type 2 diabetes and hypercholesterolemia, 2g/day of L-carnitine significantly reduced Lp(a) (lipoprotein a) levels after 6 months from 29.6 to 23.4 mg/dL , compared to the placebo (27.8 to 26.7 mg/dL).A study on type 2 diabetics over 3 months found that 2g/day of L-carnitine significantly improved the following parameters: oxidized LDL levels decreased by 15.1 compared with 3.0 U/L , LDL cholesterol decreased by 0.45 compared with 0.16 mmol/L, triglycerides decreased by 1.02 compared with 0.09 mmol/L , apolipoprotein A1 concentrations decreased by 0.12 compared with 0.03 mg/dL ,                         /apolipoprotein B-100 concentrations decreased by 0.13 compared with 0.04 mg/dL, thiobarbituric acid–reactive substance concentrations decreased by 1.92 compared with 0.05, and conjugated diene concentrations decreased by 0.72 compared with 0.11 in the placebo group.Physical Activity and Sports PerformanceOne study found that 2g/day of L-carnitine L-tartrate minimized chemical damage to muscle tissue after exercise and enhanced the repair process in healthy, active 40-60 year old subjects. Specifically, improvements were seen in the biochemical markers of purine metabolism (ie, hypoxanthine, xanthine oxidase), free radical formation (malondialdehyde), muscle tissue disruption (myoglobin, creatine kinase), and muscle soreness after physical exertion.One study on 16 long-distance runners receiving 2g/day of L-carnitine for 1 month showed significant increases in the pyruvate dehydrogenase complexes as well as increased performance and improved oxygen consumption during exercise. Another study on similar subjects also found improved activity in rotenone-sensitive NADH cytochrome c reductase, succinate cytochrome c reductase and cytochrome oxidase, respiratory chain enzymes in the mitochondria. Supplementation also resulted in increased total and free carnitine.The effects on sports performance of L-Carnitine was measured in 110 top boy and girl athletes (rowers, kayak-canoers, swimmers, weightlifters and medium and long-distance runners) after an acute dose and after 3 weeks of consuming 1g per day orally. Significant improvements were found for FFA, triglycerides, lactic acid, evoked muscular potential, plasma carnitine, urine carnitine, and others. Free carnitine permits a larger quantitiy of FFA to enter the mitochondria and be used more as an energy source during both endurance and explosive efforts.Energy and FatigueStudies using L-carnitine in chronic fatigue syndrome (CFS) have been successful. One such study was a crossover trial where l-carnitine was directly compared to the drug amantadine (often prescribed to treat CFS in Multiple Sclerosis [MS] patients). The results were that amantadine was poorly tolerated by the CFS patients, forcing 15 of the 30 to drop out of the treatment due to side effects – with no statistically significant improvements among those who remained. After a 2-week washout period, the second 8-week phase of the study began – this time with L-carnitine as the intervention. Only one patient withdrew from this phase of the study, and significant improvements were recorded in 12 of the 18 standard parameters used to measure the degree of CFS symptoms.One 6-month study on 66 centenarians administered 2g of L-carnitine per day. The study noted significant changes in the following parameters: reduction of total fat mass, increases total muscular mass, and facilitates an increased capacity for physical and cognitive activity by reducing fatigue and improving cognitive functions. Total fat mass (-1.80 compared with 0.6 kg), total muscle mass (3.80 compared with 0.8 kg), plasma concentrations of total carnitine (12.60 compared with -1.70 μmol), plasma long-chain acylcarnitine (1.50 compared with -0.1 μmol), and plasma short-chain acylcarnitine (6.0 compared with -1.50 μmol). Significant differences were also found in physical fatigue (-4.10 compared with -1.10), mental fatigue (-2.70 compared with 0.30), fatigue severity (-23.60 compared with 1.90), and MMSE(4.1 compared with 0.6).Liver & Kidney Health and ImmunityL-carnitine has also been linked to liver health, particularly through its ability to control serum ammonia levels. In fact, several studies with hepatic encephalopathy patients have confirmed not only this ability on the part of l-carnitine, but also the ability to improve mental function in this condition as measured by NCT-A, an accepted psychometric test for mental status in such patients. As mentioned earlier, l-carnitine supplementation in patients with renal failure has been so extensive that its use has even been advocated by the National Kidney Foundation. In one eight-month study, only 3 grams of intravenously administered l-carnitine per week was required to improve left ventricular ejection fraction (which is taxed heavily during renal failure) by more than 30%.  L-carnitine supplementation has also been studied in HIV-positive patients, both as stand-alone and adjuvant therapy; l-carnitine enhances CD4 immune cells in the former while protecting them in the latter, thus effectively making l-carnitine an immune system enhancer.HyperthyroidismHyperthyroidism and male infertility have also been subjects for l-carnitine supplementation. Since endogenous l-carnitine plays a marginally inhibitory role in the activity of thyroid hormones, it was hypothesized that increasing l-carnitine levels via supplementation would have a positive effect on hyperthyroid patients. The hypothesis proved correct in at least one study, where daily doses as low as 2 grams (for 6 months) prevented and reversed symptoms of hyperthyroidism, including the latter’s effect on bone mineralization.Male Fertility and Prenatal HealthL-carnitine has also been linked to increased sperm counts, leading to a number of studies with it among infertile males. These studies, which used 2-3 grams of l-carnitine daily in periods generally ranging from 2 to 4 months, were successful in increasing both sperm count and motility. Finally, there is also some evidence to suggest that l-carnitine might be useful for women during prenatal periods; one short-term study (5 days) showed that 4 grams of l-carnitine combined with the drug betamethasone reduced the incidence of respiratory distress syndrome as well as mortality in premature newborns.

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