Many people take L-carnitine to help boost their athletic performance and lose weight. Check out some of the best L-carnitine supplements and how they work. Then get the most L-carnitine benefits from them.

There are thousands of health supplements on the market, and each is designed to improve your health in different ways.

Whether you are trying to boost your athletic performance and your overall endurance when working out. Or you want to lose some weight, an L-carnitine supplement may be ideal for you.

If you have started to shop around for an L-carnitine supplement, the options can be overwhelming. Additionally, you may have a hard time deciding which one to buy.

We know that selecting the right supplement can often be an arduous process. We have done the research for you. And also we created a list of some of the best L-carnitine supplements available.

To help you decide if these supplements are the best for you, we will also discuss some L-carnitine benefits. And also the things to consider when selecting a supplement.

How We Chose Our Ratings

There are hundreds of L-carnitine supplements on the market. Moreover, you’re probably curious about how we narrow down the options and choose our top 5 L-carnitine supplements.

Our primary goal is to find the best supplements available. And we also strive to provide the most accurate and helpful information. This is so that you can make a confident and better-informed decision too.

No one has the time to test out dozens of supplements in hopes of finding the right one for their health needs. That’s why we did extensive research and also considered everything from scientific data to peer reviews when choosing a rating.

What does a five-star rating mean?

A five-star rating is a product that exceeds our expectations. And also got overwhelmingly positive reviews from other users.

Even if we love a product, we always consider outside research. Additionally, we check the feedback before coming up with a rating.

Not only do we focus on good feedback, but we pay attention to negative feedback too. It helps create a well-balanced and unbiased review.

Furthermore, we take our ratings seriously. This is because we value your trust in our reviews, and we never rush to choose our favorite products.

Our Top 5 Best L-Carnitine Supplements

Now you have a better understanding of how we rate our products.

Not only have we created a list of the best L-carnitine supplements. But also, we will showcase our top choice first. And then offer you some other suitable alternatives.

It’s important to note that even if a supplement that you might be interested in taking isn’t our top pick, it doesn’t mean that it’s not a good supplement.

As a list full of our best picks, you can feel confident about taking any of the supplements. Of course, read through the reviews and make sure it’s the best choice for you.


OverAll Rating


Vitamorph Labs Acetyl L-Carnitine Supplements

Acetyl L-Carnitine l-carnitine benefits


NOW Foods L-Carnitine Supplements

Now Foods l-carnitine benefits


NOW Sports L-Carnitine Liquid

NOW Sports l-carnitine benefits


BulkSupplements Pure L-Carnitine Powder

Nutricost l-carnitine benefits


BRI Nutrition L-Carnitine Supplements

BRI Nutrition l-carnitine benefits


Supplements: L-Carnitine Benefits & Reviews

1st Vitamorph Labs Acetyl L-Carnitine Supplements

Acetyl L-Carnitine l-carnitine benefits



Our Rating

Vitamorph Labs is known for its “Bona Fide Best Formulas."

It is also a top-selling U.S. manufacturer for sports nutrition supplements.

Each bottle of L-carnitine includes 120-750 mg vegetarian capsules. Users who take the recommended dose of two capsules twice a day can benefit from a high-potent 1,500 mg dose.

The supplement is manufactured in the United States. And in a facility that follows National Sanitation Foundation (NSF) and GMP (Good Manufacturing Practices).

Accordingly, the vegetarian capsules are easier to digest. Moreover, there are no additives like stimulants or caffeine.

Other ingredients in the capsule include hypromellose, magnesium stearate, and rice flour. Microcrystalline cellulose helps preserve the capsule. Conversely, these ingredients do not affect the efficacy of the supplement.

According to Vitamorph Labs, some of the L-carnitine benefits include:

  • A boost in energy, focus, and endurance
  • Promotes lean muscle growth
  • Aids in muscle recovery when bodybuilding
  • Suitable for weight loss and during cardio activity

Furthermore, the recommended dose gives you 3,000 mg of L-carnitine per day.

All things considered, users who want to start out at a lower dose (which equals 750 or 1,500 mg per day) have that option and flexibility.

Accordingly, with the pure formula, there’s no worry of getting too “jittery” when taking the supplement.

2nd NOW Foods L-Carnitine Supplements

Now Foods l-carnitine benefits



Our Rating

NOW Foods is a U.S. company. Also, they have five decades of experience in manufacturing and distributing wellness products. Which includes supplements of course.

Each bottle of their L-carnitine formula contains 180-500 mg vegan-friendly capsules. And the recommended dose is one to three capsules a day.

Additionally, this supplement is manufactured in a facility that follows GMP. It also does not contain yeast, wheat, gluten, soy, milk, egg, fish, shellfish, or tree nut ingredients.

Significantly, other ingredients in the pure L-carnitine formula, include cellulose, cellulose powder, magnesium stearate, and silica. Nonetheless, none of these ingredients affect the L-carnitine.

Furthermore, according to NOW Foods, the benefits of their supplement include:

  • Break down fat for better energy
  • Reduce heart-related chest pain
  • Alleviate muscle fatigue
  • Improve endurance
  • Vegan-friendly

Therefore, for users who want a low dose supplement, this is a good option with some room for flexibility. This supplement is also an ideal option for vegetarians or vegans. Since this will help them find a suitable L-carnitine supplement. Rather than eating meat.

Our overall rating is 4.5/5

3rd NOW Sports L-Carnitine Liquid

NOW Sports l-carnitine benefits



Our Rating

We know many people are happy with, or used to take a supplement in the form of a capsule. However, some would instead get the benefits of the supplement in a liquid form.

This L-carnitine liquid supplement has the same benefits and properties of the L-carnitine capsules. In contrast, it absorbs more quickly and easily.

Additionally, each 16-ounce bottle contains about 32-one tablespoon servings. Also, each serving contains 1,000 mg of L-carnitine, and the recommended dose is two tablespoons once a day.

Ingredients in the liquid formula include vitamin B-5 and B-6, potassium, stevia extract, and purified water. It also has vegetable glycerin, malic and citric acid, natural fruit extracts, and lemon oil.

Presently, it is available in two flavors, citrus and fruit punch. This supplement is also another excellent option for vegetarians and vegans. Or specifically to anyone who wants a liquid L-carnitine supplement.

All things considered, our overall rating is 4/5

4th BulkSupplements Pure L-Carnitine Powder

Nutricost l-carnitine benefits



Our Rating is a supplier of over 400 nutritional supplements and is located in Nevada.

Also, this L-carnitine powder is manufactured in a facility that follows GMP.

Additionally, they also have an in-house lab for testing.

Similarly, like the liquid supplement, this powder supplement is another suitable alternative to getting the most out of a supplement. 

Subsequently, the supplement is available in three different sized resealable pouches. And each serving is 500 mg, which is about 2,000 per pouch (depending on the size of the bag).

This time, the recommended dose is 500 mg (or 3/16 of a teaspoon) one to four times a day. Also, the supplement dissolves quickly into water, juice, or a beverage of your choice.

Furthermore, there are no extra ingredients in the formula. And it also has no soy, sugar, dairy, yeast, or gluten.

Also, according to the manufacturer, some benefits of the powder supplement include:

  • A boost of energy and endurance
  • Reduced muscle fatigue
  • Heart-healthy formula

A powder supplement is a convenient option for users who have a hard time taking capsules. Or if they aren’t interested in a flavored liquid supplement.

Our overall rating is 4/5



Our Rating

BRI Nutrition is a U.S. based manufacturer of nutritional products. All supplements and other products are created in a GMP-certified facility.

Each bottle contains 180-500 mg vegetarian capsules. And the recommended dosage is two capsules once a day. Other ingredients, other than the L-carnitine. Include vegetable cellulose, vegetable magnesium stearate, and silicon dioxide.

According to BRI, the benefits of their formula include:

  • Improved energy
  • Cardiovascular health

The capsules are smaller than other supplements on the market (according to BRI Nutrition). But they are the standard size for other similar vegetable capsules. This supplement is another solid vegetarian/vegan-friendly option.

Our overall rating is 3.5/5

Buyer’s Guide

Now that we’ve provided you with five top-quality L-carnitine supplement options. We will discuss some L-carnitine benefits.

We will also discuss other things to consider before or when taking the supplement.

As a well-informed consumer, you should be able to confidently decide whether or not this is the best type of supplement for your health needs.

What Is L-Carnitine?

Before you start taking a daily L-carnitine supplement, it’s crucial to know what it does and how it works.

L-carnitine is a naturally occurring type of amino acid. It can boost an individual’s energy levels by transporting fatty acids into the mitochondria (where they become energy).

High-protein foods, such as animal products like meat, fish, and dairy, are primary sources for L-carnitine. Vegans and vegetarians often rely on supplements to avoid a deficiency.

Individuals who have dialysis, liver disorders, use some medications, or have genetic disorders may be more prone to an L-carnitine deficiency.

L-Carnitine Benefits For Your Health

Many manufacturers target their L-carnitine supplements to people who want to lose weight.

They also target people who want to improve their athletic performance (endurance), and relieve muscle fatigue due to working out.

L-carnitine supplements may benefit all of the above.

It may also help people with severe deficiencies due to liver disease, improve heart health, and regulate blood sugar. And it may even prevent age-related memory issues.

Potential Side Effects

Like all supplements, there is always a potential risk of side effects. Although pure L-carnitine supplements are relatively safe, it’s important to talk with your doctor if you are pregnant or nursing. It’s also crucial to discuss your health history with your doctor before using the supplement. And to never give it to a child without consulting a pediatrician first.

Potential side effects include, but are not limited to nausea and vomiting, upset stomach, heartburn, loose stools, seizures, and giving urine, sweat, and breath a “fishy” smell.

If you experience any side effects that are worrisome or out of the ordinary. Make sure to consult your doctor immediately.

As with any supplement, you should talk with your doctor about any supplements or medications that you are taking. This is to see if it will interact with the L-carnitine supplement. Blood clotting and thyroid medications are known to have adverse interactions with the supplement.

Reading The Label

While the supplements that we reviewed and put on our “best” list are pure forms of L-carnitine, it’s essential that you know how to read a label. Make sure you understand all the dosing directions and the ingredient list. Avoid products that don’t have a clear list of ingredients or dosing information.

While most supplements are not regulated by the FDA, it’s better to purchase a product that is manufactured in a GMP-certified facility. If you have sensitivities to any specific ingredients, read the label carefully. If you are unsure, contact the manufacturer.

What’s The Best Amount To Take For Maximum L-Carnitine Benefits?

As you read the L-carnitine labels, you may notice that the recommended doses vary from one supplement to the next. Many health experts say that the most effective and safe dose is anywhere from 500 to 2,000 mg per day. Others recommend no more than 1,000 mg per day.

For the dose that’s ideal for you, it is best discussed with your health professional.

If you plan to take more than 500 mg a day, start out with a low dose and slowly work your way up. Moreover, this may help prevent some side effects.

Finally... Getting The Maximum L-Carnitine Benefits

L-carnitine supplements may provide numerous benefits to individuals depending on their health needs. For individuals who want to use the supplement as an aid for weight loss, a healthy diet and regular exercise routine may help reap the maximum benefits of the supplement.

It’s also important to consider that if you eat a well-balanced diet that is rich in animal-products, L-carnitine may not be the best supplement for your health goals. If you do decide to take the supplement, and you are not L-carnitine deficient, you should consider the lowest dose available.