The Best L Carnitine Supplement for Fat Loss (2020)

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Using L-carnitine supplements can help you with weight loss, fat loss and more!

Compared with all other fat burning products on the market, L-Carnitine has been much more effective for me than almost all others. There is a lot of debate surrounding the use of L-carnitine for weight loss or fat loss, but I am a firm believer!

Overall, L-carnitine has a long history of being a fat-burner and performance enhancing supplement

L-carnitine first broke on to the supplement scene as a fat burner back in the 1980s, but quickly lost is overwhelming hype due to stimulant-based fat burners and fat-burners which offered quicker results.

Today, people still argue against the need for l-carnitine supplementation, since stimulant-based fat burners can have bigger effects in less time. However, carnitine works in a much more natural way for your body!

In my opinion, the best L-Carnitine supplement is Now Foods L Carnitine. I have used Now Foods L-Carnitine in the past, and it is an affordable and effective L Carnitine supplement:

For those of you who are wondering how this non-stimulant supplement can aid you in burning fat, I will discuss the science behind L-carnitine and my opinion on how to use it effectively.

Keep reading to learn more about why to use L-Carnitine supplements, and how to choose the best carnitine supplement for yourself

What is Carnitine?

Carnitine is often classified as being an amino acid, while technically it really isn’t.

Carnitine is widely considered as a vitamin-like, and amino acid-like compound, which is closely related to the B-vitamins. When studies were first carried out on carnitine back in the 1905s, it was referred to as Vitamin BT.

In our diets, L-carnitine comes mainly from meat and other animal products. Beef and bison are especially high in carnitine.


You can also get this nutrient from plant sources such as soybeans and avocado, but the best source as a rule is meat (the redder the better).

what is the best carnitine supplement

Furthermore, L-Carnitine supplements are now widely available for purchase throughout the world, and you can easily purchase high quality L-Carnitine online.

For the effectiveness of this product, it is well worth the money! Generally, there are two forms of Carnitine.

  • D-Carnitine
  • L-Carnitine.

The latter is the one that is biologically active and found in nature.

You’ll see it listed on labels as Acetyl L-carnitine, L-carnitine L-tartrate, or Propionyl L-carnitine. These compounds are very similar, and equally effective.

On the other hand, the D form is biologically inactive, and is not sold as a supplement.

If you’re going to purchase carnitine for fat loss, make sure you buy a high-quality Acetyl L-Carnitine!

L Carnitine Pros and Cons


While L-carnitine is produced naturally in the liver and kidneys from the sulphur containing amino acids lysine, and methionine, it is stored elsewhere in the body.

L-carnitine is primarily stored in the muscles (heart inclusive), the brain, and even in sperm.

If you are thinking about purchasing carnitine for supplementation, the important attribute that you care about is that carnitine plays a significant role in the transfer of fatty acids to the mitochondria.

Research has shown that taking carnitine every day increases the blood muscular level, thereby enhancing fat metabolism, and subsequently better exercise performance. In my opinion, you feel this effect very quickly.

According to a study published in the journal Nutrition,

“As recently shown, carnitine has direct effects in regulation of gene expression (i.e., carnitine-acyltransferases) and may also exert effects via modulating intracellular fatty acid concentration. Thus there is evidence for a beneficial effect of l-carnitine supplementation in training, competition, and recovery from strenuous exercise and in regenerative athletics.”

Personally, I use carnitine before basketball practices and games, along with my additional strength and conditioning.

It honestly plays a key role in helping your body’s cellular system feel energized and able to perform!

Regular supplementation with carnitine helps the body to spare glycogen usage, thereby utilizing more body fat in the process. This is the reason that I feel it is best used before fasted cardio!

Fasted cardio itself is a way of transferring your bodies fat stores in to energy.

In my opinion, l-carnitine accelerates this process as well! L-carnitine’s role as a bonafide fat burner is well documented.

Along with being a pure fat burner, it can also help you limit fat gains and make a cleaner bulk during bulking periods.

Furthermore, it can also help you transport fat deposits present in your cellular furnaces, to get burned as energy during exercise.

Research also shows that despite the presence of an extra 640 calories of fast-digesting carbohydrates in the daily diets of a group of athletes taking carnitine, no additional body fat was gained.

In this same study, a similar group intaking the same amount of carbohydrates, without carnitine, gained over 5 pounds of body fat!

Now that is an impressive difference!


The performance benefits of L carnitine are not only its ability to increase fat burning and decrease glycogen use, it’s also its ability to enhance blood flow to the muscles.

Although L-Carnitine does have an impressive list of potential benefits, there are also a few side-effects you need to be aware of.

Most of these side-effects only happen at extremely high dosages though. From experience, do not exceed the recommended daily amount of carnitine.

Twice in my past I have “over-dosed” on carnitine, and it was not pretty.

Nothing serious happened, but the stomach issues are not fun. L-carnitine can cause nausea, vomiting, diarrhea, and abdominal cramps when high doses are taken.

Extremely rare occurring side effects include muscle weakness in uremic patients, and seizures in individuals with seizure disorders.

If you are looking to purchase a fat burner, buying L-Carnitine is a healthy and wise choice!

See Also: The Best Natural Fat Burners

Acetyl L-Carnitine and Intermittent Fasting

As I said before, to me, the benefits of L carnitine are most shown when used prior to fasted-training.

According to a study published in Nutrition Journal,

“Intravenous L-carnitine can ameliorate fasting-induced hunger, fatigue, cholesterol abnormalities and hepatic metabolic changes and facilitate fasting-induced weight loss in Metabolic Syndrome patients.”

Fasted training doesn’t (and probably shouldn’t) consist of any form of intense exercise, but is better done as a leisurely walk or bike ride.

If you search about the benefits of fasted cardio online, you will find a very wide array of both positive and negative answers. However, from my personal experience and years of using this in my routine, I can tell you it honestly works.

One of the lesser known processes of the human body is called “cell autophagy.”

Essentially, this is when your body eats its own dead cells, cleaning your body from the inside out.

This becomes an incredible tool for anyone who is looking to burn fat directly, and not risk burning muscle tissue. Fasting, and training while in a fasted state, is the absolute best way to maximize this effect.

Cell autophagy is one of the amazing natural process of our human body, and if you understand how to maximize its effects; you will quickly be on your way to your best body ever!

Taking advantage of this process also leave your body feeling lighter and more active, allowing you to train hard, lose weight fast, and avoid that sluggish feeling we all hate!

What is the Best L Carnitine Dosage for Weight Loss or Fat Loss?

As little as 1 gram of L-carnitine can be highly effective, and taking 2-3 grams per dose is generally your best bet for maximum benefit.

When I do my fasted training, I normally will take 1-1.5g of l-carnitine, since in a fasted state you do not need as much to have the required effects.

If this is going to be your first time taking L-Carnitine, I suggest starting with a 500mg dosage.

L-Carnitine will increase the temperature inside your body, and it is best to work your way up in dosage slowly!

I highly recommend combining carnitine with caffeine, because you will feel much more energized than either alone.

I cannot exactly say why this is, but try it and you’ll see!

What is the Best L Carnitine Supplement?

Many people have written l-carnitine off as an effective fat burner since there are so many fat burners which promise quick results.

L-carnitine works for your body in a much different manner, and is exceptional for your health on a cellular level.

If you want to buy a pure L-Carnitine supplement, one of my favorites is Now Foods L-Carnitne, which is very cheap for the given amount.

Regardless, using L-carnitine is a staple in my healthy routine.  I believe if you try it in your routine, and use it as specified in this article, you will see great results as well!


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