10 Best Amino Acids Supplement Capsules of December 2025

• MUSCLE GROWTH - Stimulated by the stress of your workout and encouraged by the jolt of leucine, then, your muscles will have everything they need to grow and be better prepared for your next workout.
• REDUCED FATIGUE - Amino acids demonstrated the ability to ward off the mental fatigue that sometimes accompanies long workouts.
• MENTAL FOCUS - amino acid supplements improve your short term memory and processing abilities.
• PERFORMANCE - It can improve your overall performance. Your body will respond better to your workouts and your mind will operate more efficiently during the actual event, allowing you to maintain your focus and make better decisions.
• FAT BURNING - For those trying to lose some body fat or athletes training on a low-carb diet, then, amino acids will help your body make the switch to depending on fat for fuel.

Country Life

• BCAAs 2:1:1 ratio of leucine, isoleucine, valine
• RECOVERY take your training efforts to the next level by supporting endurance and recovery
• ACTIVE LIFESTYLE help your active lifestyle by supplementing with ON BCAA capsules
• Easy to swallow capsules
• AVAILABLE IN 60 count, 200 count, 400 count bottles
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Optimum Nutrition

• Allergen information: milk
• Dietary Supplement
• A Combination of Important Amino ACids
• Daily amino acid maximum your strength.
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

21st Century

• Building Blocks Of Protein; Amino acids are the building blocks of protein, and protein is the building block of muscle
• Eight (8) Essential Amino Acids; This formulation provides eight free form essential amino acids; Essential amino acids cannot be manufactured by the body and therefore must be obtained through diet or supplementation
• Optimal Absorption; Essential Amino Complex provides free form essential amino acids to promote optimal absorption and assimilation
• Gluten, Wheat & Dairy Free; Solgar Essential Amino Complex is non-GMO, vegan, kosher, and free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives and color; Suitable for vegetarians
• The Gold Standard: For over 70 years, Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Solgar

• NOW Sports Amino Complete is a unique combination of amino acids and protein
• Amino Complete provides the specialized nutrients your body needs to repair existing muscle tissue and build new muscle tissue, as well as recover from your workouts more quickly so you’re able to exercise with greater frequency
• All this in a daily serving size of four capsules – that’s it

NOW

• SUPPORTS MUSCLE RECOVERY & ENDURANCE - BCAAs are used by athletes for a reason: Research shows that BCAAs help to both maintain and build muscle strength and endurance, while supporting physical performance and brain function. But BCAA supplementation can be advantageous for anyone—not just strength or endurance athletes.
• BCAAS FOR IMMUNE SUPPORT - Athletes need healthy immune function for peak performance, and BCAAs help maintain healthy immune system function.This is another reason why BCAAs can be beneficial to anyone seeking to bolster their natural defenses.
• NOT JUST FOR ATHLETES – You don’t have to be a professional athlete or even a weekend warrior to benefit from BCAAs. Take a page from the athlete’s playbook and help maintain healthy skeletal muscle, promote brain function and support your immune system with Branched Chain Amino Acids.
• 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. Our formulations are created using the exact ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy are achieved.

Life Extension

• Muscle/Tissue Support: Essential Aminos contains a balanced ratio of essential amino acids in one dietary supplement for optimal support of protein synthesis and metabolism.*
• Protein Support: Amino acids are the building blocks for all proteins, making them essential for a number of body functions, including proper fluid balance, enzyme production, cellular repair and energy metabolism.*
• Neurotransmitter Health: Amino acids also provide a readily available form of nitrogen, a critical element that forms various compounds such as neurotransmitters.*
• Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
• Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

Pure Encapsulations

• CARLYLE BCAA: BCAA capsules are scientifically designed to support athletes on-the-go
• ADVANCED FORMULA: Features a precise 2,000 mg blend of Branched Chain Amino Acids per serving
• 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

• Same trusted quality with a brand new look! Packaging may vary
• AMINO COMPLETE FOR ATHLETES: Get a balanced blend of protein and free-form amino acids in one handy supplement! Take 4 capsules daily with your drink of choice. (Informed-Sport, Quality GMP Assured, Kosher (contains gelatin), Non-GMO)
• GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
• Packaged in the USA by a family owned and operated company since 1968
• Allergen information: shellfish_free

NOW

• Contains all 9 Essential Amino Acids (EAAs) - Each serving consists of a 1 gram powder blend of all 9 essential amino acids
• Contains all Branched Chain Amino Acids (BCAAs) - Each serving contains L-Leucine, L-Isoleucine, and L-Valine
• Required for Countless Bodily Functions - The nine essential amino acids are required for many bodily processes such as building proteins and synthesizing neurotransmitters
• Supports Muscle Recovery and Growth - Essential aminos help support muscle growth, muscle soreness, and exercise endurance
• Manufactured and Tested in the USA - Double Wood's Essential Amino Acid Capsules are manufactured and tested for safety right here in the USA

Double Wood Supplements