L-Carnitine L-Tartrate

IngredientImpactMain FunctionSecondary Dosage
LCLT7Fat MetabolismExercise Performance2-4 g

L-Carnitine L-Tartrate (LCLT) is a form of the amino acid L-carnitine that is often used as a dietary supplement. It has gained popularity in the fitness and weight loss community due to its potential role in supporting fat loss.

Here’s how LCLT may help with fat loss:

  1. Fat metabolism: L-Carnitine is involved in the transport of fatty acids into the mitochondria, which are the energy-producing centers of cells. Once inside the mitochondria, fatty acids can be oxidized and used as a source of energy. By facilitating the transport of fatty acids, LCLT may increase the body’s ability to use fat as fuel, potentially leading to greater fat oxidation and utilization during exercise.
  2. Improved exercise performance: Some studies suggest that LCLT supplementation may enhance exercise performance, particularly during endurance-based activities. By promoting the use of fat as an energy source, LCLT can help spare glycogen (the stored form of carbohydrates) during exercise. This can be especially beneficial for prolonged workouts, as it delays the depletion of glycogen and reduces the risk of premature fatigue.
  3. Reduced muscle damage and soreness: LCLT has been associated with decreased markers of muscle damage and soreness following intense exercise. By supporting muscle recovery and reducing exercise-induced damage, individuals may be able to maintain a consistent workout routine, which is essential for long-term fat loss goals.
  4. Potential appetite regulation: Some studies have suggested that L-carnitine supplementation, including LCLT, might influence certain hormones related to appetite regulation, such as leptin and ghrelin. Although the evidence is not conclusive, it is possible that LCLT could have a positive effect on appetite control, potentially reducing overall calorie intake and supporting fat loss efforts.
  5. Enhanced muscle preservation: When in a caloric deficit (consuming fewer calories than the body needs), there is a risk of losing both fat and lean muscle mass. LCLT has been proposed to have a muscle-sparing effect during weight loss, which may help preserve lean body mass while primarily targeting fat loss.


L-carnitine is naturally present in various foods, particularly in animal products. Here are some six natural food sources of L-carnitine:

  1. Red meat: Beef and lamb are among the richest sources of L-carnitine. Lean cuts of beef and lamb contain higher amounts of L-carnitine compared to fattier cuts.
  2. Pork: Pork is another good source of L-carnitine. Pork loin and pork chops generally contain higher levels of L-carnitine.
  3. Poultry: Chicken and turkey are also sources of L-carnitine, but they typically contain lower amounts compared to red meat.
  4. Fish: Fish such as cod, haddock, and salmon contain L-carnitine. Fatty fish like salmon and tuna provide additional health benefits due to their omega-3 fatty acids.
  5. Milk and dairy products: Milk and dairy products, including cheese and yogurt, contain some L-carnitine. However, the amount is relatively small compared to animal meats.
  6. Avocado: Avocado is one of the few plant-based sources of L-carnitine. While the amount is lower compared to animal products, avocados offer other health benefits due to their nutrient profile.

Below are seven health benefits to supplementing with L-Carnitine.

  1. Fat metabolism and weight management: L-carnitine plays a crucial role in the transport of fatty acids into the mitochondria, where they are oxidized to produce energy. By enhancing fat metabolism, L-carnitine may support weight management efforts by promoting the use of stored fat as an energy source during exercise and daily activities.
  2. Exercise performance and endurance: L-carnitine has been studied for its potential to improve exercise performance, especially in endurance activities. By facilitating the transportation of fatty acids to be used as fuel, L-carnitine may help spare glycogen, which is the body’s stored form of carbohydrates. This can delay fatigue during workouts, allowing individuals to maintain higher intensity and exercise for longer durations.
  3. Muscle recovery and reduced muscle damage: Some research suggests that L-carnitine supplementation might aid in muscle recovery and reduce markers of exercise-induced muscle damage. This can be particularly beneficial for athletes or individuals engaged in intense training, as it supports quicker recovery between workouts.
  4. Heart health: L-carnitine has been associated with potential benefits for heart health. It may help improve blood flow, support healthy blood pressure levels, and reduce the risk of certain cardiovascular conditions. It can also aid in the management of angina (chest pain) in individuals with heart disease.
  5. Brain health and cognitive function: L-carnitine is found in high concentrations in the brain, and it may play a role in supporting brain health and cognitive function. Some studies suggest that L-carnitine supplementation could have neuroprotective effects and potentially help with age-related cognitive decline.
  6. Management of certain health conditions: L-carnitine supplementation may be beneficial for individuals with certain health conditions, such as carnitine deficiencies, mitochondrial disorders, and metabolic disorders.
  7. Male fertility support: Some studies have indicated that L-carnitine might improve sperm motility and sperm count in men with fertility issues.
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