Best L-Carnitine Weight Loss Supplements of 2025

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L-Carnitine is a popular weight loss supplement that has gained a lot of attention in recent years. This amino acid is naturally produced in the body and helps to transport fatty acids into the mitochondria, where they can be burned for energy. L-Carnitine supplements are believed to boost metabolism, increase energy levels, and aid in weight loss. They are available in various forms, including capsules, tablets, and liquids, and can be found at most health food stores. While L-Carnitine supplements are generally safe, it is always important to consult with a healthcare professional before starting any new supplement regimen.
At a Glance: Our Top Picks
Top 10 L-Carnitine Weight Loss Supplements
NOW L-Carnitine Supplements
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.
Nutricost Acetyl L-Carnitine Capsules - High Quality Energy Supplement
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.
Burn-XT Fat Burner
Burn-XT Fat Burner by Jacked Factory is a clinically studied weight loss supplement designed to increase energy, focus, and metabolic rate. It contains high-stimulant ingredients like caffeine and green tea extract that help support your fitness goals. As a metabolism booster and appetite suppressant, it can help you lose weight and maintain hard-earned muscle tissue. Burn-XT is a comprehensive science-driven formula that provides effective doses of evidence-based ingredients like Capsimax cayenne pepper extract, high-potency green tea leaf extract, caffeine, and more. Plus, it's manufactured in a state-of-the-art cGMP facility using premium raw materials that are tested for purity, potency, and authenticity. With a 30 day money-back guarantee, Burn-XT is a weight loss supplement that you can trust.
Carlyle Acetyl L-Carnitine Capsules
Carlyle Acetyl Capsules are packed with beneficial features. Firstly, they contain Acetyl L-Carnitine, an amino acid that occurs naturally in your body. This supplement delivers 1,000 mg of Acetyl L-Carnitine per serving, perfect for both pre and post-workout needs. Additionally, Carlyle focuses on providing premium supplements to support your health journey. Lastly, the product is free of gluten, wheat, yeast, lactose, artificial sweeteners, and preservatives, ensuring you get a clean, non-GMO formula.
Horbaach Acetyl L-Carnitine Capsules
Horbaach Acetyl L-Carnitine Capsules are perfect for those who want to energize their routine and support healthy brain function. This supplement contains maximum strength 1500mg free-form capsules for maximum absorption, naturally free of gluten, wheat, yeast, milk, lactose, soy, and artificial color and flavoring. It's a trusted choice for laboratory-tested superior quality ingredients. By taking this supplement, you can convert fat into cellular energy, support healthy brain and neurotransmitter function, and improve cognitive support.
Pure Encapsulations L-Carnitine | Cardiovascular and Endurance Support
Pure Encapsulations L-Carnitine is a hypoallergenic supplement that supports amino acid utilization and acts as a carrier of acids into the mitochondria, which converts them to energy. It also supports cardiovascular health and physical recovery from high-intensity exercise. The supplement is made with premium ingredients and is free from wheat, eggs, tree nuts, peanuts, gluten, artificial colors, flavors, sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers, and preservatives.
Nutricost ALCAR Powder - High Quality Non-GMO L-Carnitine Supplement
Nutricost Acetyl L-Carnitine Powder is a high-quality supplement that contains 1 gram of acetyl L-Carnitine powder per serving. This unique form of L-Carnitine is Non-GMO, Gluten-Free, and 3rd party tested. It comes with a scoop and is made in a GMP compliant, FDA registered facility. This ALCAR powder is designed to support your overall health and fitness goals.
Pure Encapsulations L-Carnitine Fumarate Support for Enhanced Muscle | 120 Capsules
The Pure Encapsulations L-Carnitine Fumarate supplement provides dual support for energizing the heart and muscles while supporting cardiovascular health. It promotes oxygenation of heart muscle, enhances endurance training, and maintains healthy lipid metabolism. The supplement is made with premium ingredients and is free from wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.
BULKSUPPLEMENTS.COM Acetyl L-Carnitine Powder, ALCAR HCl - Amino Acids Supplement
BULKSUPPLEMENTS.COM Acetyl L-Carnitine Powder, ALCAR HCl - Amino Acids Supplement is a pure and clean carnitine supplement formulated to provide two main benefits. Firstly, it may help to produce energy more efficiently, allowing you to endure more activities, which is beneficial for those who lead active lifestyles. Secondly, it may help support brain health and function, making it an ideal addition to your daily routine and regimen for individuals leading a healthy lifestyle. It is unflavored and easy to take, and can be added to your shake, protein shake, smoothies, or simply just water. Also, the product is gluten-free, soy-free, dairy-free, and free of added sugars.
Thorne Acetyl-L-Carnitine Capsules - Brain Function Support
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.
Frequently Asked Questions (FAQs)
1. Can L-carnitine help you lose weight?
Conclusions: l-carnitine supplementation provides a modest reducing effect on body weight, BMI and fat mass, especially among adults with overweight/obesity.
2. How much weight can you lose with L-carnitine?
In a review of nine studies of people with obesity, researchers found that participants taking L-carnitine lost about 2.9 more pounds (1.3 more kilograms) than those who didn't.
3. Which L-carnitine is best for fat loss?
Best Carnitine Supplements. Best Carnitine Overall: Jacked Factory Growth Surge.Best Carnitine-Only Supplement: Kaged L-Carnitine.Best Fat-Burner with Carnitine: Jacked Factory Burn-XT.Best Carnitine Capsules: Kaged L-Carnitine.Best Carnitine For Athletes: Jacked Factory Growth Surge.
4. What are the side effects of L-carnitine?
When taken by mouth: L-carnitine is likely safe when taken for up to 12 months. It can cause side effects such as stomach upset, heartburn, diarrhea, and seizures. It can also cause the urine, breath, and sweat to have a "fishy" odor.
During our l-carnitine weight loss supplement research, we found 24 l-carnitine weight loss supplement products and shortlisted 10 quality products. We collected and analyzed 377,116 customer reviews through our big data system to write the l-carnitine weight loss supplements list. We found that most customers choose l-carnitine weight loss supplements with an average price of $22.48.
The l-carnitine weight loss supplements are available for purchase. We have researched hundreds of brands and picked the top brands of l-carnitine weight loss supplements, including NOW Foods, Nutricost, Jacked Factory, Carlyle, Pure Encapsulations. The seller of top 1 product has received honest feedback from 2,199 consumers with an average rating of 4.9.

Bonnie Salem is a stay-at-home mother with two-year-old twins and has spent almost half of her life surrounded by baby products. As a mother and a professional copywriter, she has an insightful and unique eye for researching products suitable for infants. Bonnie Salem is an expert in health and nutrition who lives with her family in New Jersey. She has over 15 years of working experience in an institute of medicine after graduating from the University of Toronto. She is highly interested in personal health and wellness.