What is L-Carnitine and What is it Used For?

L-Carnitine is a popular dietary supplement known for its potential benefits in weight loss and muscle definition. It is commonly used as a fat burner, helping the body to metabolize excess fat and convert it into energy, which can be especially beneficial for those looking to enhance their physical fitness and muscle tone. L-Carnitine is available in various forms including liquid, powder, pills, capsules, and injections, with injections being the most effective due to their direct application to targeted areas of the body. However, it’s important to note that L-Carnitine may not be effective for everyone, particularly those with certain medical conditions like renal disease.

How to Take L-Carnitine?


L-Carnitine is typically taken 30 minutes before meals or workouts, depending on your fitness goals. For example, if you are using capsules, you would take two pills before a meal. It’s crucial to combine L-Carnitine with a balanced diet and regular exercise to achieve the best results.

For liquid L-Carnitine, a common method is to mix 20 drops in 1.5 liters of water and drink it in the morning, followed by another bottle in the afternoon.

Complementary Products

There are also L-Carnitine creams and gels available that can be applied directly to the body before exercise, which help to target specific areas for fat reduction.

General Recommendations

  1. Exercise Regularly: It’s essential to exercise when taking L-Carnitine because it converts fat into energy. Without exercise, this extra energy can lead to increased heart rate or other side effects.
  2. Timing: Take L-Carnitine 30 minutes to an hour before exercising to optimize its effects. Some people may prefer taking it one hour before for better endurance during aerobic routines.
  3. Consistency: Combine L-Carnitine with a healthy diet and regular gym sessions. With proper usage and exercise, you can see noticeable results within two weeks.

Recent Scientific Studies on L-Carnitine

Recent studies have shown mixed results regarding the effectiveness of L-Carnitine supplementation. A study published in the “Journal of Physiology” highlighted that while L-Carnitine does play a role in fat metabolism, its effectiveness can vary depending on individual factors such as diet and exercise levels. Additionally, research in the “Journal of Clinical Endocrinology & Metabolism” suggested that L-Carnitine supplementation could improve physical performance and recovery in endurance athletes, emphasizing its role in energy metabolism during prolonged exercise​ (Oxford Academic)​​ (SpringerLink)​.

For more detailed information on the scientific aspects of L-Carnitine and its benefits, you can explore the following articles:


L-Carnitine can be a useful supplement for those looking to enhance their fitness routines and achieve better muscle definition. However, its effectiveness can vary, and it is crucial to use it in conjunction with a balanced diet and regular exercise. Always consult with a healthcare professional before starting any new supplement regimen, especially if you have underlying health conditions.