What are amino acid supplements?

Amino acids are compounds found in foods and produced by the human body. Amino acid supplements provide key nutrients that support protein synthesis, muscle recovery, and metabolic health. Twenty of them function as essential building blocks for proteins in the human body:

You can find formulas that contain a single amino acid and combination products that provide two or more amino acids.

What do amino acid supplements do?

Taking amino acid supplements may benefit the body by supplying more of the amino acids required for protein production. Proteins are found in almost every tissue of the body and are also necessary for manufacturing enzymes and the hemoglobin that transports oxygen. Whether you're an athlete, fitness enthusiast, or simply looking to support your body's natural processes, the potential benefits of amino acid supplements may include:

• Promoting muscle protein synthesis
• Supporting post-workout recovery
• Maintaining lean muscle mass
• Supporting endurance and reducing muscle fatigue
• Assisting with nutrient absorption and metabolic function

Types of amino acid supplements

Essential Amino Acids (EAAs): Essential amino acids cannot be produced by the body and must be obtained through diet or supplementation. EAAs support muscle repair, immune function, and overall vitality.

Branched-Chain Amino Acids (BCAAs): leucine, isoleucine, and valine—are a subset of EAAs known for their role in muscle recovery and performance. BCAA supplements are popular among athletes and those engaging in resistance training.

Single Amino Acid Supplements: Some supplements focus on individual amino acids like glutamine, arginine, or lysine, which may support specific functions such as immune health, nitric oxide production, or collagen synthesis.

When to take amino acid supplements

The timing of when you take your amino supplements depends on your goals—pre-workout for energy or intra- and post-workout for endurance and recovery. They may also be used between meals to support muscle maintenance and recovery. Follow the recommended serving size and consult your healthcare provider if you have specific dietary needs.

Amino acid supplements are generally considered safe when used as directed. They are intended to support normal physiological functions and are not intended to diagnose, treat, cure, or prevent any disease. Choose products from trusted brands and look for third-party testing to ensure quality and purity. Always consult with a healthcare provider if you have any concerns or underlying health conditions.

Where to buy amino acids

If you're interested in taking amino acid supplements, The Vitamin Shoppe makes it easy to shop capsules, tablets, liquids, and powders online. Use the filter menu to browse by brand, format, life stage, specialty dietary need, and more, so you can choose the best amino acid supplements for your unique preferences and needs.