10 Best L-Carnitine 1500 Extreme Mega Caps of December 2025

• FIGHT OXIDATIVE STRESS & BOOSTS ENERGY – Acetyl-L-carnitine helps fight oxidative stress at the cellular level. Combine that with this nutrient’s ability to facilitate cellular energy production, and you have an invaluable daily supplement for whole-body wellness.
• GOOD FOR YOUR BRAIN - Acetyl-L-carnitine is great for supporting the parts of your body that need lots of cellular energy, such as your brain and nervous system (as well as your heart and cardiovascular system). So much so that this specialized carnitine supplement can even help with things not usually associated with your mind, such as nerve comfort and mood health.
• A BETTER KIND OF CARNITINE – Carnitine helps turn food into cellular energy. This supplement contains Acetyl-L-Carnitine Arginate, an advanced form of carnitine that promotes even better youthful cellular energy metabolism than traditional carnitine. This in turn means even greater benefits for brain health, nerve health and cellular energy production.
• INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. This product is certified non-GMO and gluten-free. Manufactured in the USA and a Certificate of Analysis is available for every product we produce.
• LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach and that rigorous scientific research is the path to get us there. Or formulations are created using the exact ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy is achieved.

Life Extension

• ENERGIZE YOUR ROUTINE: Acetyl L-Carnitine is important for converting fat into cellular energy*
• MAXIMUM STRENGTH ACETYL CARNITINE: 1500 MG Free-Form Capsules for maximum absorption!
• COGNITIVE SUPPORT: This Amino Acid supports healthy Brain and Neurotransmitter function*
• HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
• NATURALLY FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Soy, Artificial Color & Flavoring & NON GMO

Horbäach

• ADVANCED L-CARNITINE: Premium form of L-Carnitine, a naturally occurring non-essential amino acid
• BOLD FORMULA: Delivers 1,500 mg of free form L-Carnitine per serving in quick-release capsules
• ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living
• CARLYLE MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
• NATURALLY FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Artificial Flavor & Sweetener, and Non-GMO

Carlyle

• Promotes a healthy stomach lining and environment
• Helps relieve occasional gastric discomfort & maintin a healthy GI environment
• Label images may vary
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Doctor's Best

• ENERGY AND PERFORMANCE: Our premium L Carnitine 1500 fast-acting formula includes amino acids to support your muscles while increasing your energy levels during and after high intensity exercise or endurance training workouts. These workout shots also helps support a healthy environment for lean muscle growth and maintenance, enhances mental clarity and also promotes exercise recovery contributing to a leaner physique and a variety of other health benefits.
• STIMULANT FREE FAT BURNER: L-Carnitine is a non-essential amino acid that assists with the transport of long-chain fatty acids into cells and helps them be utilized as energy. Our L-Carnitine metabolic enhancer shots naturally support fat loss and aid in muscle preservation during training making it a powerful workout supplement for men and women. Enjoy a boost of clean energy with no sugar and no carbs.
• PROMOTES MUSCLE RECOVERY: Our liquid carnitine helps in reducing muscle soreness and muscle damage after exercise or workout. This stim free liquid shots also helps prolong training endurance, delay onset of exercise induced fatigue, increase power output and recovery rate to increase the work capacity of your skeletal muscle.
• 8 DELICIOUS FLAVORS: ProSupps L Carnitine drink was formulated with world-class flavors to ensure it can satisfy every palate. Indulge in Berry, Blue Razz, Green Apple, Orange Burst, Sweet-N-Tart, Cherry Popsicle and Vanilla. No artificial flavors.
• FOR PRE AND POST WORKOUTS: Our ProSupps L Carnitine shots can be used as a pre-workout supplement booster to help gain energy from fat instead of muscle. Use as a post-workout recovery drink, L-Carnitine weight loss drinks support the body by preventing lactic acid from accumulating in your muscles, which means you can workout longer and recover faster.

PROSUPPS

• ENERGY & FOCUS: L-Carnitine plays a crucial role in the production of energy by transporting fatty acids into your cells’ mitochondria. The mitochondria act as engines within your cells, burning these fats to create usable energy.
• COGNITIVE FUNCTION: L-Carnitine is known to help Reduce Cognitive Fatigue. It enhances mental focus and alertness by increasing memory related functions
• ANTI-OXIDANT & CARDIOVASCULAR HEALTH: Burns Transports Fatty Acids to support your Cardiovascular Energy Levels. It can support in increase oxygen supply to the muscles
• EXTRA STRONG CAPSULE: Dr. Martin’s provides a massive 200 Capsule with each capsule size of 500mg each. A Powerful Formula with over a 2 month supply to get you going and boost your body!
• TRUSTED - Buy NOW with Complete Confidence that Dr Martin's Nutrition L Carnitine will boost your overall health - Click Add to Cart Now!

DR. MARTIN'S NUTRITION

• GET YOUR BODY INTO KETOSIS FASTER: Quicker Fat Burning with Extreme Weight Loss. Our exogenous ketones supplement will help you get into a ketogenic state faster. The Keto beta-hydroxybutyrate (BHB) formula helps support increased blood ketone levels, support weight management and acts as an appetite suppressant.
• PROPRIETARY FAT BURNING FORMULA: Our patented blend of Apple Cider Vinegar (ACV) with the Mother along with BHB salts helps trigger ketosis to convert from burning glucose to ketones for increased weight loss and metabolism support.
• SUPERCHARGE YOUR KETO DIET: Supplementing your body with ketones may help boost your energy levels, increase mental and physical performance as well as support metabolism. A keto diet has been shown to support easier weight management and overall healthy wellness.
• TRUSTED FOR GENERATIONS: Apple Cider Vinegar (ACV) is a historical and potent herb that we've formulated into a convenient capsule. It contains all of the properties without a bitter taste or smell. Try our ACV Keto pills for increased weight loss.
• COMMITTED TO QUALITY: All Herbtonics products are manufactured in a FDA registered facility and tested by 3rd party labs to ensure they meet our high quality standards. (Packaging May Vary)

Herbtonics

• Clinically Studied Metabolism Booster & Appetite Suppressant: As one of few thermogenic fat burners for women and men that has been clinically shown to increase energy, focus, and metabolic rate, Burn-XT has set a new precedent for weight-loss support. The keyword being “support”: Burn-XT won’t do all the hard work for you, but it will help you make the most of your hard work!
• Not a Miracle Fat Burner: Let’s be honest: no weight-loss supplement will magically get rid of belly fat overnight. But with the right diet and training plan in place, a properly formulated fat burner like Burn-XT can help you burn fat and lose weight in stubborn areas while maintaining hard-earned muscle tissue. Containing ingredients like caffeine and green tea extract, this high-stimulant fat burner can help support your fitness goals.
• Evidence-Based Weight Loss Supplement: Unlike other fat burners on the market, Burn-XT features a comprehensive science-driven formula designed to help you lose weight (and keep it off). Each serving provides effective doses of evidence-based ingredients like Capsimax cayenne pepper extract, high-potency green tea leaf extract, caffeine, and more. No nonsense or harsh stimulants that do more harm than good.
• cGMP USA Manufacturing: All Jacked Factory supplements are manufactured in a state-of-the-art cGMP facility using premium raw materials that are tested for purity, potency, and authenticity. Be confident that each bottle of Burn-XT contains precisely what’s on the label and nothing more.
• Your Weight-Loss Journey is the Destination. Losing weight and getting lean takes dedication and commitment. Our mission is to make the journey a little easier with innovative, fully transparent formulas and science-backed educational resources you can count on.

Jacked Factory

• Same trusted quality with a brand new look! Packaging may vary
• NOW Sports Triple Strength L-Carnitine Supplement offers 3,000 mg of pure, clinically tested, vegetarian/vegan, highly absorbable liquid L-Carnitine to support fat metabolism.* Mix it in water for a quick citrus flavored DIY sports drink or add it to a shake/smoothie! (GMP, Halal, Kosher, Non-GMO, Steroid Free, Dairy Free, Egg Free, Made Without Gluten, Soy Free)
• Informed-Choice is an adulteration monitoring program through LGC that conducts monthly blind batch testing of registered products at the retail level and posts updated results on their website. The Informed-Choice logo indicates that these products have been tested for, and certified to be free of, banned substances through the Informed-Choice certification program.
• Packaged in the USA by a family owned and operated company since 1968

NOW

• ✔️ Superior Potency 1500 MG: Our Acetyl L-Carnitine delivers 1500 mg per serving with 100 vegan capsules making it the most potent formula available on the market.
• ✔️ Superior Quality: Made with 100% pure Acetyl L-Carnitine without the use fillers or binders.
• ✔️ Premium Quality: We take pride in providing you 100% pure Acetyl L-Carnitine which does NOT CONTAIN fillers, magnesium stearate, dioxides, preservatives, gluten, soy, sugar, yeast, starch, non-GMO
• Manufactured in a FDA registered facility in accordance with Good Manufacturing Practices (GMP) 100% SATISFACTION GUARANTEE: Feel results or your money back, no questions asked!
• Recommendation: As a dietary supplement, take two (2) capsules daily with a meal or as recommended by your healthcare practitioner. Common side effects are more common if serving is not taken with a meal and adequate amount of water: stomach upset, nausea, dry mouth

NaturaLife Labs