Best L-Carnitine Amino Acid Supplements of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 4, 2025

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L-Carnitine is an amino acid that is found naturally in the human body and is essential for the metabolism of fat. L-Carnitine supplements are popular among athletes and bodybuilders as they can help to increase energy levels, reduce muscle damage, and improve recovery time. These supplements are also used by those looking to lose weight as they can help to boost metabolism and burn fat. They come in various forms, including capsules, tablets, and liquid, and are generally safe to use when taken as directed. It is important to note that L-Carnitine supplements are not a magic solution for weight loss or muscle gain, and should be used in conjunction with a healthy diet and exercise routine.

At a Glance: Our Top Picks

NOW L-Carnitine Supplements Cover #TOP 1
NOW L-Carnitine Supplements
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NOW L-Carnitine 500mg Veg Capsules Cover #TOP 2
NOW L-Carnitine 500mg Veg Capsules
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Bronson Acetyl L-Carnitine 500 MG Capsules Cover #TOP 3
Bronson Acetyl L-Carnitine 500 MG Capsules
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Top 10 L-Carnitine Amino Acid Supplements

NOW L-Carnitine Supplements

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NOW Foods Supplements, L-Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets

NOW L-Carnitine 1,000 mg tablets offer fitness support by boosting cellular energy and transporting fatty acids. It is a non-essential amino acid that helps to maintain overall good health. The product is non-GMO, Kosher, Soy Free, Vegan/Vegetarian and manufactured under GMP Quality Assured standards. The supplement is packaged in the USA by a family-owned and operated company since 1968.

What We Like
Purest form and clinically tested
Facilitates the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production
Non-GMO, Kosher, Soy Free, Vegan/Vegetarian

NOW L-Carnitine 500mg Veg Capsules

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NOW Foods Supplements, L-Carnitine 500mg, Purest Form, Amino Acid, Fitness Support*, 60 Veg Capsules

NOW L-Carnitine 500mg Veg Capsules offer fitness support, boost cellular energy, and transport fatty acids. These vegetarian capsules are the purest form of L-Carnitine, clinically tested, and non-GMO. They are also kosher, soy-free, and vegan/vegetarian. The product is GMP Quality Assured and packaged in the USA by a family-owned company since 1968.

What We Like
Purest form of L-Carnitine
Vegan and non-animal sourced
Boosts cellular energy and transports fatty acids
#TOP 3

Bronson Acetyl L-Carnitine 500 MG Capsules

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Bronson Acetyl L-Carnitine 500 MG High Potency Amino Acid Non-GMO, 60 Capsules

Bronson Acetyl-L-Carnitine Capsules offer a high potency formula with 500 MG per capsule to support your overall health and well-being. The capsules are GMO-free, gluten-free, and soy-free, ensuring superior quality. Manufactured in a state-of-the-art facility in New York, these capsules meet cGMP premium standards for purity and potency. Trusted since 1960, Bronson Vitamins have been recommended by medical professionals. Take 1 to 3 capsules daily for optimal support and feel confident in the quality and safety of this supplement.

What We Like
High Potency Formula
Superior Quality
cGMP Premium Standards
#TOP 4

Thorne Acetyl-L-Carnitine Capsules - Brain Function Support

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THORNE Acetyl-L-Carnitine - 500 mg - Supports Brain Function and Healthy Nerve Sensations in The Hands and Feet - Gluten-Free, Soy-Free, Dairy-Free - 60 Capsules

Thorne Acetyl-L-Carnitine Capsules are a gluten-free, soy-free, and dairy-free dietary supplement that supports healthy brain function and nerve sensations in the hands and feet. With 500 mg of acetyl-l-carnitine, this product acts as an antioxidant in the brain and nerves of the upper and lower limbs, promotes healthy sperm count and motility, and supports cognitive function and focus. Thorne is committed to producing science-backed and pure products, containing no GMOs, artificial preservatives, or allergens, earning the trust of health-care professionals and families worldwide.

What We Like
Supports healthy brain function and nerve sensations in the hands and feet
Acts as an antioxidant in the brain and nerves of the upper and lower limbs
Promotes healthy sperm count and motility
Gluten-free, soy-free, and dairy-free
Produced with pure and science-backed ingredients, containing no GMOs, artificial preservatives, or allergens
#TOP 5

Nutricost Acetyl L-Carnitine Capsules - High Quality Energy Supplement

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Nutricost Acetyl L-Carnitine 500mg, 180 Capsules - Non-GMO and Gluten Free

Get 180 servings of high-quality Acetyl L-Carnitine in each bottle of Nutricost capsules. With 500mg per capsule, this supplement can help you manage your energy levels effectively. These capsules are non-GMO, gluten-free, and third-party tested, ensuring their safety and efficacy. Made in a GMP compliant, FDA registered facility, you can trust in the quality of this product.

What We Like
Contains 180 servings of high-quality Acetyl L-Carnitine
500mg per capsule helps manage energy levels
Non-GMO, gluten-free, and third-party tested for safety
Made in a GMP compliant, FDA registered facility
Provides an unflavored, easy-to-take capsule form
#TOP 6

NOW Acetyl-L-Carnitine Supplement

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NOW Foods Supplements, Acetyl-L-Carnitine 750 mg, Amino Acid, Brain And Nerve Cell Function*, 90 Tablets

The NOW Acetyl-L-Carnitine Supplement is a modified amino acid that supports cellular energy production by transporting fat into the mitochondria where it is converted into ATP. It boosts cellular energy and helps to manage typical oxidative stress, supports mitochondrial function, and neurotransmitter activity. The supplement is Kosher, Non-GMO, and packaged in the USA by a family-owned company since 1968.

What We Like
Supports cellular energy production
Boosts cellular energy and helps manage oxidative stress
Kosher and Non-GMO
#TOP 7

NOW Acetyl-L Carnitine Capsules

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NOW Foods Supplements, Acetyl-L Carnitine 500 mg, Amino Acid, Brain And Nerve Cell Function*, 200 Veg Capsules

NOW Acetyl-L Carnitine Capsules are an excellent supplement for those looking to boost their cellular energy and improve brain and nerve cell function. This product helps to transport fatty acids and convert them into cellular fuel. It supports mitochondrial function and helps to maintain normal neurotransmitter activity. Additionally, it is Kosher, Non-GMO, and soy-free, making it a great choice for a wide range of dietary needs. The product is GMP quality assured, and is packaged by a family-owned and operated company in the USA.

What We Like
Assists in transport of fat into mitochondria, increasing cellular energy production
Supports mitochondrial function and normal neurotransmitter activity, improving brain and nerve cell function
Kosher, Non-GMO, and soy-free, suitable for a wide range of dietary needs
#TOP 8

Jarrow Formulas Acetyl L-Carnitine 500 mg

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Jarrow Formulas Acetyl L-Carnitine 500 mg, Dietary Supplement, Amino Acid Support for Brain Health and Antioxidants, 60 Veggie Capsules, 60 Day Supply

Jarrow Acetyl L-Carnitine is a daily wellness supplement designed for both men and women, providing 60 servings in each bottle. This amino acid helps support brain health by enhancing antioxidant levels and boosting cellular energy through the metabolism of fatty acids. You can easily incorporate it into your routine since it’s non-GMO and gluten-free. For optimal results, take one capsule one to two times daily on an empty stomach, or follow your healthcare professional's guidance. It's a convenient way to promote brain function and energy production in your daily life.

What We Like
Supports brain health
Boosts cellular energy
Non-GMO and gluten-free
Easy daily use
#TOP 9

Horbaach Acetyl L-Carnitine HCL & Alpha Lipoic Acid 1200mg

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Horbäach Acetyl L Carnitine HCL & Alpha Lipoic Acid 1200mg | 120 Capsules | ALC ALA Complex | Non-GMO & Gluten Free Supplement

Horbaach ALC ALA Complex is a non-GMO and gluten-free supplement that contains a highly bioavailable form of the amino acid L-carnitine. With a potent complex of 1200mg Acetyl L-Carnitine HCL and Alpha Lipoic Acid per serving, this expertly crafted formula is backed by a commitment to purity and potency. The supplement is laboratory tested and contains trusted ingredients, ensuring superior quality. Horbaach ALC ALA Complex is naturally free of gluten, wheat, yeast, milk, lactose, soy, artificial color, and flavor. The supplement is useful for boosting energy levels, enhancing cognitive function, promoting weight loss, and improving overall health.

What We Like
Potent complex
Highly bioavailable
Naturally free of allergens
#TOP 10

Clean Nutraceuticals Alpha Lipoic Acid 600mg N-Acetyl Cysteine 600mg Acetyl L-Carnitine 500mg Benfotiamine 300mg

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Alpha Lipoic Acid 600mg N-Acetyl Cysteine 600mg Acetyl L-Carnitine 500mg Benfotiamine 300mg - Nerve Support Supplement for Women and Men with Vitamin B1, B6 & B12 - Made in USA 90 Caps

Clean Nutraceuticals Nerve Defend is an advanced nerve support supplement that combines the benefits of Alpha Lipoic Acid, N-Acetyl Cysteine, Acetyl L-Carnitine, and Benfotiamine in one capsule. The supplement is designed to promote nerve health and support healthy nerve function. With a potent formula that contains higher dosages than other supplements, Nerve Defend provides convenience and efficiency. The supplement is made in the USA in a registered and certified facility, and the ingredients are vetted and trusted. With Clean Nutraceuticals Nerve Defend, you can enjoy a comprehensive and convenient solution to support your nerve health.

What We Like
All-in-one nerve support
Higher dosages than other supplements
Vetted and trusted ingredients
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Frequently Asked Questions (FAQs)

1. What does L-carnitine amino acid do?

Overview. L-carnitine is a chemical that is made in the human brain, liver, and kidneys. It helps the body turn fat into energy. L-carnitine is important for heart and brain function, muscle movement, and many other body processes.

2. What is the health benefit of L-carnitine?

When taken as a supplement, L-Carnitine has been shown to have a beneficial impact on weight loss and improved brain function. It has also been linked to improved heart health, exercise performance and recovery, reduction in muscle soreness and increased oxygen supply to muscles.

3. What happens when you take L-carnitine?

L-carnitine may benefit: Recovery: May improve exercise recovery ( 46 , 47 ). Muscle oxygen supply: May increase oxygen supply to your muscles ( 48 ). Stamina: May increase blood flow and nitric oxide production, helping delay discomfort and reduce fatigue ( 48 ).

4. Does carnitine help weight loss?

Conclusions: l-carnitine supplementation provides a modest reducing effect on body weight, BMI and fat mass, especially among adults with overweight/obesity.

Editor's Notes

During our l-carnitine amino acid supplement research, we found 24 l-carnitine amino acid supplement products and shortlisted 10 quality products. We collected and analyzed 78,034 customer reviews through our big data system to write the l-carnitine amino acid supplements list. We found that most customers choose l-carnitine amino acid supplements with an average price of $21.88.

The l-carnitine amino acid supplements are available for purchase. We have researched hundreds of brands and picked the top brands of l-carnitine amino acid supplements, including NOW Foods, Bronson, THORNE, Nutricost, Jarrow Formulas. The seller of top 1 product has received honest feedback from 2,199 consumers with an average rating of 4.9.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.