A Guide To Finding The Best L-Carnitine Supplement That Will Make You Lose Weight

Are you planning to take L-Carnitine for its many health benefits? Have you got no clue how to choose what is the best L-Carnitine supplement for your needs? This article is here to help you!

In this endeavor, you must first know what L-Carnitine is and how it can help with your health. Then, I will guide you with some criteria in choosing the best product for you. Finally, included here are reviews of five of the best L-Carnitine products you can opt for.

So what are you waiting for? Keep on reading to find out.

**Below, you'll find more detailed reviews, but you can also click links above to check current prices and read customer's reviews on Amazon.


L-Carnitine And Its Health Benefits

best l-carnitine

L-Carnitine is an amino acid produced from lysine and methionine. Amino acids are building blocks of proteins. This is the main reason why L-Carnitine is useful in gaining muscle mass.L

-Carnitine is naturally produced in your body, but supplements are sometimes needed to elevate low levels or as replacement supplements for people with strict diets and premature or low-weight infants.Other reasons for lowered L-Carnitine levels are medical procedures such as hemodialysis in kidney disease patients which use up L-Carnitine.

Genetic disorders or side effects of some drugs such as valproic acid can also cause a decrease in L-Carnitine.

Aside from L-Carnitine deficiency, L-Carnitine offers a wide range of health benefits. Although most claims need further research, the following are the conditions on which L-Carnitine may have positive effects.

  • Fat And Weight Loss

L-Carnitine is usually marketed for weight loss. Studies show that taking it orally can help increase muscle mass, and reduce fat mass and fatigue. It can also suppress appetite and give you aerobic resistance and strength for more efficient calorie burning.

  • Muscle Mass

L-Carnitine is perfect for packing on muscles in weightlifters and hard gainers. It also helps strengthen your muscles which allow you to lift heavier weights and so get bulkier.

  • Heart Conditions

Studies suggest that L-Carnitine can help reduce the symptoms of angina and heart failure. It can also assist in the recovery from and prevent the recurrence if taken immediately after a heart attack.

  • Peripheral Vascular Disease (PVD)

PVD is a condition where there is reduced blood flow to the legs due to hardened arteries. It can cause pain and stiffness. Several studies have shown that L-Carnitine helps alleviate the symptoms and improve the mobility of patients with PVD.

  • Diabetic Neuropathy

This occurs when dangerously high glucose levels in the blood cause nerve damage, especially in the limbs.This can cause pain, numbness or even paralysis.Some preliminary investigations suggest that L-Carnitine help in reducing these symptoms and may also possibly contribute to nerve regeneration.

L-Carnitine can also help type II diabetes patients by improving glucose oxidation, storage, and uptake.

  • Alzheimer’s Disease And Memory Impairment

Several studies show that L-Carnitine can delay the progression of Alzheimer’s disease, relieve senility and dementia-caused depression and help improve, memory in older people.

  • Male Infertility

Experiments have concluded that L-Carnitine can increase sperm count and motility, as well as help in solving erectile dysfunction.

  • Brain Function

L-Carnitine has been known to protect you from both stress and age-related brain damage and improves cognitive functions.

How To Choose The Best L- Carnitine Product

best l-carnitine

In order to assist you in selecting an L-Carnitine product, here are five characteristics you should look for. Not only will these narrow down your choices but also ensure you get the most out of the product you will purchase.

  • 1. Purity And Concentration Of Product

First on this list is the purity of the product. Opt for ones that give you a relatively pure concentration over those that contain fillers or extenders. This way, you get the full benefit of the supplement and also makes for money well spent.

  • 2. The Form Of L-Carnitine

When it comes to form, there are two ways to look at L-Carnitine: chemical form and physical form.Its chemical forms include Acetyl-L-Carnitine which is argued to be the most effective but also the most expensive. Another is Propionyl-L-Carnitine which helps raise Nitric Oxide (NO) levels in the body for improved circulation and is great as a pre-workout supplement.

Last is L-Carnitine-L-Tartrate which is the most common and the cheapest choice, although it is the fastest to be absorbed in the body. It also offers all the benefits of L-Carnitine along with improved physical strength and power output.

L-Carnitine can also come in capsules, quick-release gel capsules, tablets, powder and liquid form. Based on research, powdered products are more useful but are usually unflavored. This makes them unpleasant to take.

Although they elicit the same effects, liquid forms are flavored and much more comfortable to take orally. This is useful especially for people who find swallowing tablets or capsules difficult. However, this form is not for everyone.

Usually, the liquid types need to be taken through the eyes or drank from the bottle. The problem with this is you don’t have an exact measurement on how much you’re taking. Despite this, the liquid form is still the popular choice.

So, when choosing the form of L-Carnitine supplements, consider your convenience.

  • 3. Dosage

The minimum effective dose of Carnitine is 1000 mg or 1 gram daily. However, it is most beneficial for athletes if taken at doses between 2 to 3 grams per day.You should also pay close attention to the directions indicated on the bottle or container of the supplement.

Some products may have a fraction of the effective dose per serving but are instructed to be taken more than once a day. Others may come in full effective dosage per tablet or capsule and only need to be taken once.

  • 4. Manufacturer Reliability

When buying an L-Carnitine supplement, take note of the company that manufactures it. Choose those that are produced by a reliable company. These are most likely to be more effective and trustworthy.

Dependable companies could indicate that they are GMP (Good Manufacturing Practices) certified. This means that their facilities have been inspected by the government and that they have proper certifications and established reputations.

  • 5. Additional Minerals

Although it is preferable for most people to take pure L-Carnitine products, some may opt for those with added minerals. This can be of practical importance when you have specific needs.

Examples of these minerals include calcium and phosphorus which help with the absorption of nutrients or L-Carnitine itself. They also function for electrolyte balance which is vital for many bodily processes.

5 L-Carnitine Product Reviews

Based on the criteria given previously, here are reviews of five L-Carnitine products.

Best L-Carnitine

Via: Amazon.com

This product is pure Acetyl-L-Carnitine in 200 pieces of 500 mg capsules. Acetyl-L-Carnitine is an amino acid derivative that supports transportation of fatty acids into the mitochondria. This is then oxidized and ultimately, converted into energy forms that can be used by the cell.

Acetyl-L-Carnitine is an L-carnitine form that is highly available in living organisms. It can penetrate through the brain-blood barrier and acts as an antioxidant. This helps support cognitive functions and maintain energy metabolism in the cell at healthy levels.

It is a vegetarian or vegan product that does not contain starch, sugar, salt, yeast, gluten, wheat, corn, soy, shellfish, milk, egg, or any preservatives. The product is produced in a NOW Foods GMP facility that processes ingredients containing these allergens.


  • All natural and vegetarian
  • Has an antioxidant effect
  • Maintains good cellular energy metabolism
  • Improves brain functions


  • The tablets are below minimum effective dosage 
  • Most expensive of all products reviewed here

Best L-Carnitine

Via: Amazon.com

With a 1500 mg serving size, Carnitine 1500 is the highest grade of Acetyl-L-Carnitine available. It offers the antioxidant effect of Acetyl-L-carnitine for a cellular energy boost and improved brain function.

It also provides added benefits like strengthening, energy giving, weight shedding, and fat burning assistance. It can be taken any time during the day with or without meals. It does not contain stimulants and capsules are vegetarian. This accounts for better digestibility and prevents allergic reactions or sensitivity to gelatin.

It is manufactured by Vitamorph Labs in the USA in NSF/GMP certified facilities that keep strict standards for quality and safety. It gives fitness, bodybuilding and health benefits of L-Carnitine.


  • Cutting edge product at a relatively lower price
  • Can be taken anytime with or without meals
  • No additives, caffeine, or stimulants for optimum absorption
  • Can be taken with CLA, Alpha Lipoic Acid, and Green Tea Extract


  • Each tablet is below minimum effective dosage
  • Needs to be taken twice per day for adults

Best L-Carnitine

Via: Amazon.com

This product is purely L-Carnitine-L-Tartrate that is vegetarian and all natural. It offers the benefits of L-Carnitine. It aids you to achieve your fitness and health goals faster and more efficiently.

It can help you burn fat, build muscles, and develop strength. It can also enhance your health by strengthening your bone mass and rejuvenating your body cells. It is perfect for vegetarians who consume far less amounts of carnitine from their diets, but non-vegetarians can benefit as well.

NOW Foods has been manufacturing and producing high-quality products in their GMP certified facilities and world class laboratories. They also use only natural and organic ingredients. The dosage per tablet, however, is the minimum so you may have to take it more than once a day.


  • All natural and vegetarian
  • In the purest form
  • Improves bone and muscle strength
  • Effectively burns fats to provide more energy


  • Minimum effective dosage in each tablet
  • One of the more expensive choices

Best L-Carnitine

Via: Amazon.com

Unlike all other products mentioned here, this product is made of clean and pure L-Carnitine product. It comes in a factory sealed foil zip pouch.

It supports fatty acid oxidation as well as increase your red blood cell count for improved oxygen circulation. It has been laboratory tested for verification and guarantee of purity.

It does not contain any soy, sugar, gluten, yeast, dairy or additives. Because the product is suggested to be taken as a dietary supplement, the daily intake may vary. The advice of a physician is highly recommended before using this product.


  • Dissolves quickly
  • The price point is amazing
  • Serving can be adjusted to preference or necessity


  • Can liquefy easily in humid places
  • There is no exact way of measuring intake

Best L-Carnitine

Via: Amazon.com

This product contains a triple strength, citrus flavored L-Carnitine syrup. It is of the purest possible form and is clinically tested.

It does not contain any salt, sugar, starch, yeast, gluten, wheat, milk, egg, soy, corn, shellfish or artificial flavors and coloring. It is a vegetarian or vegan product.

It offers the benefits of L-Carnitine in a more enjoyable form. One tablespoon of the syrup is preferably taken once daily on an empty stomach. Best results can be achieved if the product is taken with Lecithin and CLA.


  • Made of all natural vegetarian ingredients
  • 3-6 times more potent than other brands 
  • Also contains Vitamin B-12, Vitamin B-5, Calcium, and Potassium


  • Is not as pure as the powder, tablet or capsule form
  • May elicit slow fat loss effects


With all of that said, it all comes down to preference and your body’s reactions when it comes to choosing the right L-Carnitine supplements. Nevertheless, I would personally opt for the NOW Foods L-Carnitine Liquid for easier consumption.

However, if you are after purity and effective daily dosage, do go for the NOW Foods L- Carnitine-Tartrate 1000mg. It has the highest pure weight of L-Carnitine per tablet and can be taken once a day for the minimum dosage.

Furthermore, if you find yourself having to constantly adjust your daily intake of L-Carnitine, you should buy the BulkSupplements Pure L-Carnitine Powder instead. Since it is in powder form, it is easier to modify your consumption. You can also probably use it in shakes or whatnot.

Are you satisfied with this comprehensive guide and review? Please share with your friends and family and tell us about your thoughts in the comment section below!

Emily Brathen

Hi there! I'm Emily Brathen. I am a fitness and yoga instructor and a mom of one. Despite my hectic schedule, I still find time for doing the thing I love most - fitness and yoga. I love doing and teaching fitness and yoga because in my own little way, I am able to encourage people to take health and fitness back into their own hands.

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