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Unlocking the Power of L-Carnitine in 2023

By Michael Gonzales
July 18, 2023
Benefits of L-Carnitine

L-Carnitine is a naturally occurring amino acid in the human body, with research suggesting its potential for a variety of L-Carnitine benefits sought by individuals looking to improve their overall health and wellbeing. As we move into 2023, it is interesting to take an updated look at what effects this supplement may have on our lifestyle and fitness goals.

This article will provide an overview exploring its purpose, dosage, foods it can be found in, common side effects, and possible risk and benefits of L-Carnitine. By examining these topics, readers will understand better how they can use L-Carnitine to potentially unlock benefits for their body in 2023.

Short Summary

  • L-Carnitine is an amino acid-like compound found in food sources that helps transport fatty acids to mitochondria and generate energy for muscle cells.
  • Different types of L-Carnitine have different uses, such as aiding in fat metabolism, supporting cognitive health, and increasing exercise performance.
  • Consult a healthcare provider before taking L-Carnitine supplements as potential risks and side effects may occur.

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What Is L-Carnitine?

l carnitine

L Carnitine is a naturally occurring non-essential amino acid-like compound found in red meat and some plant-based sources. Supplementation with L-Carnitine is recommended for those who are unable to obtain adequate amounts through their dietary intake. L-carnitine is the only form of carnitine that can be used by the body. All other forms are inactive.

It is important to note that there are potential benefits, as well as risks, associated with the use of L-Carnitine. On one hand, taking L-Carnitine supplements may help counteract the decrease in energy levels that occurs as the body ages. Additionally, it may be recommended in cases of kidney or liver disease to support the function of the organs and prevent deficiency.

On the other hand, although L-Carnitine may potentially improve performance and facilitate fat burning, there is insufficient scientific evidence to support these claims. Thus, it is recommended to consult a physician before taking L-Carnitine supplements.

What Does L-Carnitine Do?

what does l carnitine do - Benefits of L-Carnitine

L Carnitine facilitates the transport of long-chain fatty acids to mitochondria, thereby generating energy for muscle cells and contributing to weight loss, increasing exercise performance and recovery, and bolstering heart health. Research suggests that supplementing with L-Carnitine may potentially enhance weight loss efforts by enabling longer training sessions and higher caloric expenditure.

It is suggested to take 2-4g daily to maximize the benefits of L-Carnitine for exercise performance and recovery.

Furthermore, L-Carnitine facilitates the transport of long-chain fatty acids to mitochondria, thereby generating energy for muscle cells, promoting weight loss, enhancing exercise performance and recovery, and supporting heart health.

How Does L-Carnitine Work?

L Carnitine plays a key role in fat metabolism during exercise. It helps to transfer long-chain fatty acids into muscle cells, thereby increasing the fuel availability during low-moderate intensity exercise.

L-Carnitine acts as a carrier, binding to long-chain fatty acids and shuttling them across the mitochondrial membrane to be oxidized for energy production. This helps to increase the supply of energy during exercise, aiding in fat burning and leading to improved athletic performance.

In short, L-Carnitine helps to facilitate the transportation of long-chain fatty acids into the mitochondria of muscle cells, thereby boosting the production of energy from fat. This results in increased exercise performance as well as improved fat loss.

L-Carnitine also has other health benefits such as improved brain function, improved kidney health, and improved muscle cells.

Types of L-Carnitine and Their Uses

types of l carnitine

Two types of L-Carnitine are available, namely L-Carnitine Tartrate and Acetyl L-Carnitine. L-Carnitine Tartrate has a high rate of absorption and aids in fatty acid metabolism. It is typically recommended at a dosage of 600-2,500 mg per day.

Acetyl L-Carnitine can be used to help support cognitive health, improve energy levels, and promote weight loss. It is often used as a sports supplement to increase exercise performance and burn fat. It can also be taken as a supplement to benefit brain function and for its other health benefits.

Additionally, L-Carnitine Tartrate can be used to help maintain carnitine homeostasis and for its possible effects on long chain fatty acids.

Dosage - How Much L-Carnitine Should You Take?

For maximum energy optimization during exercise, it is recommended to take L-carnitine prior to physical activity. For recovery support, it is recommended to take L-Carnitine post-exercise. For optimal weight loss support, it is suggested to take L-Carnitine after exercise. It is suggested to take 500-4,000mg of L-Carnitine for safe and effective results. L-carnitine can be sourced from animal products, whey, nuts, seeds, whole grains, fruits, and vegetables.

When considering the amount of L-Carnitine to take, it is important to remember that everyone’s needs are different and individualized. It is advisable to consult with a healthcare provider to determine the best dosage for your specific needs and goals. Furthermore, due to the fact that L-Carnitine may interact with certain medications, it is important to discuss its use with your healthcare provider prior to taking it.

When Should You Take L-Carnitine?

The potential side effects of L-Carnitine are generally mild, and may include stomach discomfort, an odor in breath and urine, and in rare cases, seizures. It is recommended that a GP be consulted before taking L-Carnitine.

L-Carnitine is a naturally occurring amino acid. It is found in many foods and can also be taken in supplement form. Taking L-Carnitine in supplement form is most beneficial when taken in the morning on an empty stomach, as this allows for the highest absorption of the amino acid by the body. This will help to increase carnitine levels in the body, aiding in the transport of fatty acids into the cells, and thus increasing the body's ability to burn fat as fuel.

In order to maximize the energy benefits of L-Carnitine, it is suggested to take it approximately one hour prior to exercise. It is also suggested to take L-Carnitine with meals that consist of high amounts of fat. This will help to increase the absorption of the amino acid and subsequently increase the fat-burning capacity of the body.

Additionally, L-Carnitine can be taken prior to exercise, as this is when the fatty acids are most needed to produce energy and improve exercise performance.

When Should You Take L-Carnitine?

L Carnitine is an amino acid-like nutrient found in certain foods. It is found in beef, pork, chicken, fish, milk, and cheese. The absorption rate of L-Carnitine from food has been found to be between 57-84%, whereas from supplements it is estimated to be between 14-18%.

Foods that contain L-Carnitine are mainly animal-based, so those following a plant-based diet may struggle to get enough of this nutrient in their diets. While some plants do contain L-Carnitine, the amounts are much lower than that found in animal sources.

It is also possible to take L-Carnitine in supplement form, which can be beneficial for those not able to consume enough of it through diet.

L-Carnitine Side Effects

Consulting a doctor prior to taking L-Carnitine is essential as they can provide guidance on the correct dosage and any potential risks associated with the supplement, depending on an individual's medical history. It is advised to consume 1-3 grams of L-Carnitine per day.

Additionally, a specific dosage is necessary for individuals with genetic abnormalities due to the potential for requiring a dosage that falls outside of the recommended range. Potential adverse effects of L-Carnitine include stomach discomfort, breath and urine odor, seizures in certain cases, heartburn, and indigestion. It is important to note that most of these side effects are rare and generally mild.

When considering taking L-Carnitine, it is important to understand the potential side effects as well as its benefits. While the supplement has been studied extensively and many benefits are associated with its consumption, it is still important to consult with a doctor beforehand, especially if one has a genetic abnormality.

Additionally, it is important to adhere to the recommended dosage to reduce the risk of experiencing any potential side effects.

Risks and Benefits of L-Carnitine

The advantages of L-Carnitine are numerous, ranging from improved cardiovascular health, prevention of muscle atrophy, retardation of Alzheimer's Disease progression, chronic heart failure management, cognitive function enhancement, exercise performance augmentation, and type 2 diabetes management.

In terms of heart health, research suggests that L-Carnitine may assist in increasing L-carnitine levels in a failing heart, potentially promoting heart health and circulation shortly after a heart attack. Supplementation is a great way to alleviate symptoms of heart failure, such as chest pain and arrhythmia. It is an additional tool which can provide great benefit in this situation. Studies have also indicated that L-Carnitine supplementation may improve protein synthesis, prevent cell death, decrease protein breakdown and reduce inflammatory responses of the cells, which could potentially reduce muscle wasting in older adults and those who are chronically ill.

Furthermore, supplementation with L-Carnitine has been associated with a reduction of symptoms of diabetes and an improvement in insulin sensitivity among overweight and obese males.

However, potential risks of L-Carnitine usage include digestive disturbances, an odor similar to that of fish, and a possible heightened risk of cardiovascular disease. Therefore, caution is advised when taking L-Carnitine, and medical consultation is recommended prior to use.

Take Home Message

Potential risks associated with L-Carnitine include digestive discomfort, a "fishy" body odor, and elevated levels may increase the risk of cardiovascular diseases. It is reported that digestive issues and the "fishy" body odor are potential side effects of L-Carnitine, and it is essential to exercise caution when taking L-Carnitine and to consult a medical professional prior to use. It is also important to be aware that L-Carnitine may amplify the effects of warfarin and acenocoumarol, potentially increasing the risk of bruising and bleeding.

Despite the potential risks associated with L-Carnitine supplementation, there are many potential benefits. L-Carnitine has been studied as a potential aid in weight loss, fat loss, brain function, kidney disease, and blood levels. It may also provide general benefits to overall health. Furthermore, research has suggested that L-Carnitine levels may be improved through dietary sources such as red meat, dairy products, and certain vegetables.


L-Carnitine is a naturally occurring compound that has been studied for a wide range of potential benefits related to energy production, exercise performance, weight loss, and cardiovascular health. This compound is found in certain food sources, primarily animal byproducts like beef, pork, and cheese, but it can also be acquired through supplementation. While L-Carnitine can provide numerous health benefits, it is important for those interested in taking the supplement to consult their healthcare provider beforehand due to potential side effects. Ultimately, the decision to use L-Carnitine rests on an individual level, taking into account dietary habits, lifestyle habits and individual goals.

In conclusion, while the risk and benefits of L-Carnitine should not be overlooked, its potential advantages can be unlocked with caution and education. With correct guidance and adherence to recommended doses, 2023 may be the year L-Carnitine becomes even more popular among individuals looking for improved overall health and fitness levels – personalizing their journey to better quality of life.

Frequently Asked Questions

What does L-carnitine actually do?

L-carnitine is an amino acid that helps facilitate the metabolism of fats, turning them into energy and subsequently aiding in weight loss. It also supports heart and brain function, muscle movement, and a variety of other body processes.

It is found naturally in red meat, dairy products, and some fish, and is also available as a dietary supplement. Studies have shown that taking L-carnitine supplements can help increase energy levels and reduce fatigue.

What are the benefits of taking L-carnitine?

Taking L-carnitine as a supplement has numerous benefits including aiding weight loss, contributing to improved brain and heart health, increased exercise performance, faster recovery time and reducing muscle soreness.

Additionally, L-carnitine can help increase oxygen supply to muscles.

What does L-carnitine do for weight loss?

By helping to move more fatty acids into cells to be burned for energy, L-carnitine is a promising supplement to support your weight loss goals. Studies indicate that taking L-carnitine can significantly reduce body weight, BMI, and fat mass.

Should I take L-carnitine everyday?

Based on the available evidence, taking an L-carnitine supplement of 2g or less per day appears to be safe and potentially beneficial.

However, it is important to note that further research should be conducted before determining if larger doses can be safely taken in the long-term.

What is L-carnitine used for?

L-carnitine plays an important role in the metabolism of fat, as it transports long-chain fatty acids into the mitochondria for energy production and helps to preserve muscle glycogen, promoting fat oxidation.

It also spares amino acids as an energy source during exercise, allowing them to be used for new protein synthesis.


  • Michael Gonzales

    Michael Gonzales is a seasoned Health & Fitness Consultant, dedicated to helping individuals achieve their wellness goals. With extensive expertise in customizing fitness plans based on individual needs, he guides clients towards optimal health. Michael's passion for empowering others has made him a trusted resource in the industry. His comprehensive approach encompasses physical fitness and overall well-being, enabling remarkable transformations. For exceptional guidance and lasting results, rely on the expertise of Michael Gonzales, your partner in embracing a healthier lifestyle.

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