The 5 Best L Carnitine Supplements for Fat Loss, Weight Loss and More!

The Best Carnitine Supplement
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There are many benefits of L carnitine supplements, and reasons to purchase the best L carnitine supplement, although they don’t directly promote weight loss or fat loss like some people say.

Using L-Carnitine for weight loss is a widely debated topic, and the scientific evidence is conflicted on whether or not L-Carnitine is beneficial for fat loss or weight loss.

Overall, L-carnitine has a long history of use as a performance-enhancing supplement.

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

Today, people still argue against the need for l-carnitine supplements, since stimulant-based fat burners can have more significant effects in less time. However, L-Carnitine supplements certainly have a role in promoting weight loss, as well as other aspects of improving body composition.

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 below.

If you are here simply to see my suggestion for the best L-carnitine supplement, 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:

NOW Supplements, L-Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets
1,452 Reviews
NOW Supplements, L-Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets
  • OFFERS FITNESS SUPPORT*: NOW L-Carnitine 1,000 mg tablets are the purest form, clinically tested,...
  • BOOSTS CELLULAR ENERGY* AND TRANSPORTS FATTY ACIDS*: L-Carnitine is a non-essential amino acid that...
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Soy Free, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing...
  • Packaged in the USA by a family owned and operated company since 1968

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

What is Carnitine?

the best l carnitine supplement

Carnitine is often classified as being an amino acid, while technically it 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, 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).

Furthermore, Carnitine supplements are now widely available for purchase throughout the world.

Generally, there are two forms of Carnitine.

  • D-Carnitine
  • L-Carnitine.

The latter (L-Carnitine) 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 L-Carnitine!

What are the Benefits of L-Carnitine Supplements?

In the body, carnitine plays a role in fatty acid transport, which is why many people assume you can use L-carnitine for weight loss. However, L-carnitine supplements don’t necessarily produce additional fatty acid transport, and more does not equal better.

However, there are other benefits of L-carnitine supplements that make it beneficial for weight loss. Here are a few benefits of L-Carnitine supplements.

Reduce Recovery Time from Exercise

Research has shown that taking carnitine enhances fatty acid metabolism and subsequently better exercise performance. In my opinion, you feel this effect very quickly.

According to a study published in the Journal of Strength and Conditioning Research,

“These data support the use of L-carnitine L-tartrate as a recovery supplement for hypoxic exercise and lend further insights into the hormonal mechanisms that may help to mediate quicker recovery.”

Additionally, as stated by a study published in the journal Nutrients,

“It is demonstrated that l-carnitine alleviates muscle injury and reduces markers of cellular damage and free radical formation accompanied by attenuation of muscle soreness. The supplementation-based increase in serum and muscle l-carnitine contents is suggested to enhance blood flow and oxygen supply to the muscle tissue via improved endothelial function thereby reducing hypoxia-induced cellular and biochemical disruptions”

For one final example, as stated by a study published in the Journal of Exercise Nutrition & Biochemistry,

“L-carnitine supplementation enhances exercise performance while attenuating blood lactate and oxidative stress responses to resistance training.”

Reduce Muscle Soreness (DOMS)

One of the greatest benefits of L-Carnitine supplements is that they reduce muscle soreness, which is a primary reason that many people cannot exercise as often as they would like. According to a meta-analysis of various L-Carnitine studies that was published in the Journal of the American College of Nutrition,

“Overall, summary results indicate that L-Carnitine supplementation improves muscle soreness and markers of muscle damage (creatine kinase,  lactate dehydrogenase, and myoglobin ).”

Additionally, the study stated that,

“Our outcomes indicate that L-Carnitine supplementation improves delayed-onset muscle soreness (DOMS) and markers of muscle damage.”

Can Increase Metabolism and Prevent Weight Gain

Although research does not indicate L-Carnitine supplements will directly promote weight loss or fat loss, it has demonstrated that they can prevent weight gain even when calorie intake is increased.

According to a study published in The Journal of Physiology,

“a major finding was that a 20% increase in muscle carnitine content prevented the 1.8 kg increase in body fat mass associated with daily ingestion of a high carbohydrate beverage. Moreover, this maintenance of body mass was associated with a greater whole-body energy expenditure during low-intensity physical activity, accounted for by an increase in fat oxidation, and a marked adaptive increase in the expression of gene networks involved in insulin signalling, PPAR signalling and fatty acid metabolism over and above the decline observed in Control.”

Provide Supplemental Carnitine for Vegans and Vegetarians

One of the most direct benefits of L-Carnitine supplements is for vegans or vegetarians who do not consume enough animal products. Since vegans and vegetarians have chronically low intakes of L-Carnitine in their diets, taking an L-Carnitine supplement is an excellent way to maintain healthy levels of L-Carnitine.

As stated by a study in the European Journal of Nutrition,

“Vegetarians have lower plasma carnitine concentrations, but maintained muscle carnitine stores compared to omnivores. Oral L-carnitine supplementation normalizes the plasma carnitine stores and slightly increases the skeletal muscle carnitine content in vegetarians.”

L Carnitine Supplement Reviews – The 5 Best L Carnitine Supplements

There are many L-Carnitine supplements on the market and it can be very confusing to know which you should choose. Here is my opinion on the best L Carnitine supplement for weight loss, fat loss, muscle building, and more:

1.) Dr. Martin’s Nutrition L-Carnitine

The overall best value for an L-Carnitine supplement is Dr. Martin’s Nutrition L-Carnitine. Each bottle contains 200 capsules of 1,000mg per serving, and a serving is two capsules each. This L-Carnitine supplement is slightly cheaper than the second product on my list.

I have never used this brand, but they have strong reviews and seem to be a reputable company.

Extra Strength L-Carnitine - 200 Capsules - 1000mg Per Serving - Boost Your Metabolism and Increase Performance
2,486 Reviews
Extra Strength L-Carnitine - 200 Capsules - 1000mg Per Serving - Boost Your Metabolism and Increase Performance
  • ENERGY & FOCUS: L-Carnitine plays a crucial role in the production of energy by transporting fatty...
  • COGNITIVE FUNCTION: L-Carnitine is known to help Reduce Cognitive Fatigue. It enhances mental focus...
  • ANTI-OXIDANT & CARDIOVASCULAR HEALTH: Burns Transports Fatty Acids to support your Cardiovascular...
  • EXTRA STRONG CAPSULE: Dr. Martin’s provides a massive 200 Capsule with each capsule size of 500mg...
  • TRUSTED - Buy NOW with Complete Confidence that Dr Martin's Nutrition L Carnitine will boost your...

2.) Now Foods L Carnitine

If you want to buy an L-Carnitine supplement, the L-Carnitine supplement I most commonly use is Now Foods L-Carnitine. Now Foods L Carnitine supplement costs only $0.27 per serving, which is a very affordable price.

Also, Now Foods is a very reputable brand and you can always trust their products.

NOW Supplements, L-Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets
1,452 Reviews
NOW Supplements, L-Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets
  • OFFERS FITNESS SUPPORT*: NOW L-Carnitine 1,000 mg tablets are the purest form, clinically tested,...
  • BOOSTS CELLULAR ENERGY* AND TRANSPORTS FATTY ACIDS*: L-Carnitine is a non-essential amino acid that...
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Soy Free, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing...
  • Packaged in the USA by a family owned and operated company since 1968

3.) Bulk Supplements L-Carnitine

Bulk Supplements L-Carnitine used to be the best L-carnitine in my opinion because it is such an incredible value, but at a certain point I got tired of using the granulated form of this product and began to opt for capsules instead. However, the advantage of this supplement is that it is much cheaper than any L-Carnitine capsules!

BulkSupplements L-Carnitine Powder (500 Grams)
1,123 Reviews
BulkSupplements L-Carnitine Powder (500 Grams)
  • Helps boost energy. and Works to improve exercise performance*
  • Aids exercise recovery*
  • Heart healthy and Supports brain function*
  • May aid in maintaining healthy glucose levels and weight in already healthy individuals when taken...
  • Contributes to overall health & wellness*

4.) RSP Nutrition Amino Lean

If you’d like to use a product that combines L-Carnitine with other additional natural fat burners and amino acids, I suggest you use RSP Nutrition Amino Lean. Amino Lean is one of my favorite supplements of all time and it contains a significant amount of L-Carnitine.

This is a great alternative to other pre workout supplements and I often use it when I am trying to lose weight.

RSP AminoLean - All-in-One Pre Workout, Amino Energy, Weight Management Supplement with Amino Acids, Complete Preworkout Energy for Men & Women, Fruit Punch, 30 (Packaging May Vary)
13,270 Reviews
RSP AminoLean - All-in-One Pre Workout, Amino Energy, Weight Management Supplement with Amino Acids, Complete Preworkout Energy for Men & Women, Fruit Punch, 30 (Packaging May Vary)
  • All-In-One Amino Energy & Weight Management - AminoLean was designed to be the most comprehensive...
  • Anytime Energy & Performance - Each serving of AminoLean contains 125mg of Caffeine from the natural...
  • Essential Amino Acids for Recovery - Each serving of AminoLean contains 5g of Amino Acids, the...
  • Comprehensive, Natural Weight Management Supplement - A scientifically formulated blend of...
  • Zero Sugars, Carbs, or Calories - AminoLean has 0 sugars, 0 carbs and 0 calories; making it an...

5.) BPI Sports CLA + Carnitine

One final supplement on my list is BPI Sports CLA + Carnitine. BPI Sports CLA + Carnitine is one of the best L Carnitine supplements because it combines carnitine with additional fatty acids, and it also contains a unique Carnitine blend.

The downside of this product is that it is artificially flavored and a little bit expensive. However, it does have a unique blend of Carnitine and fatty acids, so it can certainly help you with healthy weight loss.

BPI Sports CLA + Carnitine – Conjugated Linoleic Acid – Weight Loss Formula – Metabolism, Performance, Lean Muscle – Caffeine Free – For Men & Women – Fruit Punch – 50 servings – 12.34 oz
2,376 Reviews
BPI Sports CLA + Carnitine – Conjugated Linoleic Acid – Weight Loss Formula – Metabolism, Performance, Lean Muscle – Caffeine Free – For Men & Women – Fruit Punch – 50 servings – 12.34 oz
  • CONVERT FAT TO ENERGY: BPI Sports uses two popular ingredients that have been clinically shown to...
  • STIMULATE WEIGHT LOSS: Carnitine works as a fat transporter, helping to move fat cells to the...
  • IMPROVES METABOLISM: BPI Sports CLA powder has been developed to help your body preserve lean...
  • NON-STIMULANT FORMULA: Unlike many fat burners, BPI Sports CLA + Carnitine contains no stimulants....
  • 100% MONEY BACK GUARANTEE: BPI Sports takes pride in making superior workout formulas that taste...

*Bonus* – Vega Sport Pro Supplements Vegan L-Carnitine

For those who are vegan or vegetarian, Vega Sport Pro Supplements Vegan L-Carnitine produces a certified vegan L-Carnitine supplement! This L-Carnitine supplement is more expensive than the other options listed above, but the benefit is that it is 100% vegan.

I wanted to add this as a bonus because if although it is a great product for anyone, it is quite a bit more expensive since it is one of the only vegan L-carnitine supplements.

Vega Sport Pro Supplements, L-Carnitine L-Tartrate (60 Capsules) - NSF Certified, Certified Vegan, Gluten Free Pills
206 Reviews
Vega Sport Pro Supplements, L-Carnitine L-Tartrate (60 Capsules) - NSF Certified, Certified Vegan, Gluten Free Pills
  • ENERGY: L-carnitine helps produce energy by transporting long-chain fatty acids. Our tissues...
  • FOUND IN MUSCLE & HEART: L-carnitine is found primarily (about 90%) in muscle and in the heart
  • TRUSTWORTHY: All Vega Sport Pro supplements are NSF Certified for Sport. That means the product and...
  • VEGAN: All Vega Sport Pro supplements are made from vegan sources and certified by Vegan Action
  • USAGE: Each bottle includes 60 gluten free vegetarian capsules. 30 day supply. Take 2 capsules...

When is the Best Time to Take an L-Carnitine Supplement?

The studies conducted on L-carnitine benefits have indicated that L-carnitine does not need to be taken at a specific time. Although you can take your supplements before exercising, it is not necessarily important that you take your L-carnitine supplements at a specific time.

Instead, you should focus on taking the proper dosage of L-Carnitine each day.

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.

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

Although L-carnitine is not a stimulant, I do suggest you avoid taking it before bed. Instead, make sure your last dose is at least three-four hours before you try to sleep.

Concluding Thoughts – Should You Use L-Carnitine for Weight Loss?

If you are a person who is already active and exercising frequently, L-carnitine can help you lose weight for multiple reasons. L-carnitine has demonstrated an ability to improve exercise capacity and reduce fatigue associated with exercise, which means you will be able to exercise more intensely and more frequently if you use L-Carnitine supplements.

Due to that, you will certainly be able to lose more weight and improve your body composition more over-time.

I don’t suggest trying to use L-Carnitine as a weight loss supplement if you are not active because it will not simply stimulate your metabolism to help you lose weight.

Read Next: The Best Natural Fat Burners

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