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Amino Acids

Amino acids are the building blocks of protein and play a vital role in supporting muscle growth, recovery, and overall wellness. At The Vitamin Shoppe, we offer a wide range of amino acid supplements by leading brands to help you meet your fitness and nutritional goals.

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Amino Acids (70)
Displaying 1 - 47 of 70
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Muscle Peptide 185 for Anabolic Strength (84 Capsules)
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Muscletech
Muscle Peptide 185 for Anabolic Strength (84 Capsules)
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$79.99
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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)
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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)
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$34.99
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Liquid Liposomal Glutathione – Antioxidant Support – 500 MG – Lime Essence (4 fl. oz./30 Servings)
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RHO
Liquid Liposomal Glutathione – Antioxidant Support – 500 MG – Lime Essence (4 fl. oz./30 Servings)
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$52.99
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Peptides: The Next Big Thing in Sports Performance

Our experts break down how peptides help you build muscle and bounce back faster after tough workouts.

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Carnipure L-Carnitine - Supports Cardiovascular Health, Energy Production & Fat Metabolism - 1000 MG (100 Tablets)
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Carnipure L-Carnitine - Supports Cardiovascular Health, Energy Production & Fat Metabolism - 1000 MG (100 Tablets)
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$56.99
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Amino Acid Complex for Exercise Performance (100 Tablets)
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Amino Acid Complex for Exercise Performance (100 Tablets)
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$27.99
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Liposomal Glutathione - GlutaONE L-Glutathione Reduced & Phospholipid Complex - 1,000 MG (60 Capsules)
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Codeage
Liposomal Glutathione - GlutaONE L-Glutathione Reduced & Phospholipid Complex - 1,000 MG (60 Capsules)
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$49.99
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L-Citrulline - Free-Form Amino Acid - Nitric Oxide Booster - 1,000 MG (120 Vegetarian Capsules)
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L-Citrulline - Free-Form Amino Acid - Nitric Oxide Booster - 1,000 MG (120 Vegetarian Capsules)
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$25.99
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Glycine - Nervous System Support & Restful Sleep - 3,000 MG (100 Capsules)
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Glycine - Nervous System Support & Restful Sleep - 3,000 MG (100 Capsules)
(1)
$17.99
($0.55/Serving)

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Reduced Glutathione Antioxidant - Immune Support & Cellular Health - 500 MG (60 Capsules)
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Reduced Glutathione Antioxidant - Immune Support & Cellular Health - 500 MG (60 Capsules)
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$38.99
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L-Arginine Amino Acid - Supports Production of Nitric Oxide - 500 MG (300 Capsules)
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L-Arginine Amino Acid - Supports Production of Nitric Oxide - 500 MG (300 Capsules)
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$29.99
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L-Citrulline – Free-Form Amino Acid – Nitric Oxide Booster – 1,000 MG (240 Vegetarian Capsules)
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L-Citrulline – Free-Form Amino Acid – Nitric Oxide Booster – 1,000 MG (240 Vegetarian Capsules)
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$44.99
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 500 MG (300 Capsules)
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 500 MG (300 Capsules)
(13)
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$31.99
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Nitric Oxide Peptide 160 - Promotes Blood Flow & Greater Muscle Pumps (60 Capsules)
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Muscletech
Nitric Oxide Peptide 160 - Promotes Blood Flow & Greater Muscle Pumps (60 Capsules)
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$44.99
($1.61/Serving)

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L-Glutamine - Free Form Amino Acid for Muscle & Gut Health - 500 MG (300 Capsules)
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L-Glutamine - Free Form Amino Acid for Muscle & Gut Health - 500 MG (300 Capsules)
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$32.99
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 1,000 MG (100 Tablets)
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 1,000 MG (100 Tablets)
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$17.99
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L-Glutamine Powder - Free Form Amino Acid for Muscle & Gut Health - 4,500 MG (12 oz. /75 Servings)
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L-Glutamine Powder - Free Form Amino Acid for Muscle & Gut Health - 4,500 MG (12 oz. /75 Servings)
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$28.99
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L-Tyrosine - Supports Mental Alertness, Neurotransmitter Production & Brain Function - 500 MG (300 Capsules)
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L-Tyrosine - Supports Mental Alertness, Neurotransmitter Production & Brain Function - 500 MG (300 Capsules)
(6)
$37.99
($0.13/Serving)

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Glycine Powder – 3,000 MG – Restful Sleep & Nervous System Support (8 oz./75 Servings)
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Glycine Powder – 3,000 MG – Restful Sleep & Nervous System Support (8 oz./75 Servings)
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$17.99
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Liquid Liposomal Glutathione – 500 MG – Citrus (4 fl. oz.)
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Vthrive
Liquid Liposomal Glutathione – 500 MG – Citrus (4 fl. oz.)
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$39.99
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Liposomal Glutathione Packs - Antioxidant with PQQ & CoQ-10 - Citrus Berry (25 Single Serving Packets)
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Cymbiotika, LLC
Liposomal Glutathione Packs - Antioxidant with PQQ & CoQ-10 - Citrus Berry (25 Single Serving Packets)
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$87.99
($3.52/Serving)

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GABA for Relaxation & Focus - 750 MG (180 Tablets)
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GABA for Relaxation & Focus - 750 MG (180 Tablets)
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$34.99
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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (100 Capsules)
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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (100 Capsules)
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$24.99
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L-Arginine AKG Powder - Supports Exercise Endurance & Intensity - Unflavored (6.35 oz./60 Servings)
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BodyTech
L-Arginine AKG Powder - Supports Exercise Endurance & Intensity - Unflavored (6.35 oz./60 Servings)
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$27.99
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Carnipure L-Carnitine Amino Acid - Cardiovascular Health, Energy Production, & Fat Metabolism - 500 MG (100 Tablets)
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Carnipure L-Carnitine Amino Acid - Cardiovascular Health, Energy Production, & Fat Metabolism - 500 MG (100 Tablets)
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$39.99
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L-Carnitine - Amino Acid to Support Fat Metabolism & Cardiovascular Health - 3,000 MG - Raspberry (24 fl. oz.)
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L-Carnitine - Amino Acid to Support Fat Metabolism & Cardiovascular Health - 3,000 MG - Raspberry (24 fl. oz.)
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$34.99
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L-Glutamine Powder - Supports Immune & Muscle Function - Unflavored (60 Servings)
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Force Factor
L-Glutamine Powder - Supports Immune & Muscle Function - Unflavored (60 Servings)
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$22.99
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Liposomal Glutathione - Setria L-Glutathione Reduced - Antioxidant Support & Skin Supplement - 500 MG (60 Capsules)
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Codeage
Liposomal Glutathione - Setria L-Glutathione Reduced - Antioxidant Support & Skin Supplement - 500 MG (60 Capsules)
(173)
$39.99
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L-Citrulline - Free-Form Amino Acid - Nitric Oxide Booster - 3,000 MG - Tropical Flavor (10.7 oz./66 Servings)
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L-Citrulline - Free-Form Amino Acid - Nitric Oxide Booster - 3,000 MG - Tropical Flavor (10.7 oz./66 Servings)
(10)
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$29.99
($0.46/Serving)

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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (50 Capsules)
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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (50 Capsules)
(10)
$13.99
($0.28/Serving)

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Amino Fuel - Fast Absorbing Anabolic Liquid for Lean Muscle - Orange Rush (16 FL. Oz.)
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TwinLab
Amino Fuel - Fast Absorbing Anabolic Liquid for Lean Muscle - Orange Rush (16 FL. Oz.)
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$29.99
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L-Tyrosine - Supports Mental Alertness, Neurotransmitter Production & Brain Function - 500 MG (100 Capsules)
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L-Tyrosine - Supports Mental Alertness, Neurotransmitter Production & Brain Function - 500 MG (100 Capsules)
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$19.99
($0.20/Serving)

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Taurine - Free-Form Amino Acid for Cardiovascular Health - 500 MG (300 Capsules)
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Taurine - Free-Form Amino Acid for Cardiovascular Health - 500 MG (300 Capsules)
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$24.99
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Reduced Glutathione Antioxidant - Immune Support & Cellular Health - 250 MG (100 Capsules)
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Reduced Glutathione Antioxidant - Immune Support & Cellular Health - 250 MG (100 Capsules)
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$39.99
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 500 MG (100 Capsules)
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L-Lysine - Essential Amino Acid - Collagen & Elastin Production - 500 MG (100 Capsules)
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Glutathione Reduced - 500 MG (60 Vegetable Capsules)
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Jarrow Formulas
Glutathione Reduced - 500 MG (60 Vegetable Capsules)
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L-Carnitine Amino Acid - 3,000 MG - Supports Energy Production & Fat Metabolism - Raspberry (16 fl. oz.)
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L-Carnitine Amino Acid - 3,000 MG - Supports Energy Production & Fat Metabolism - Raspberry (16 fl. oz.)
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$29.99
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Liposomal Multi Amino+ BCAA & EAA - Free-Form Branched-Chain Amino Acids (240 Capsules)
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Codeage
Liposomal Multi Amino+ BCAA & EAA - Free-Form Branched-Chain Amino Acids (240 Capsules)
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L-Arginine HCl Amino Acid Powder - Nitric Oxide Booster & Supports Cardiovascular Health - Tropical Flavor (50 Servings)
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L-Arginine HCl Amino Acid Powder - Nitric Oxide Booster & Supports Cardiovascular Health - Tropical Flavor (50 Servings)
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PharmaGABA - Fast Acting (60 Chewable Tablets)
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Natural Factors
PharmaGABA - Fast Acting (60 Chewable Tablets)
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Carnipure L-Carnitine - Supports Cardiovascular Health, Energy Production & Fat Metabolism - 500 MG (50 Tablets)
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Carnipure L-Carnitine - Supports Cardiovascular Health, Energy Production & Fat Metabolism - 500 MG (50 Tablets)
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L-Arginine Caps – Supports Optimal Arterial Health – 700 MG (200 Capsules)
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Life Extension
L-Arginine Caps – Supports Optimal Arterial Health – 700 MG (200 Capsules)
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$24.99
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L-Lysine - Essential Amino Acid Support – 620 MG (100 Capsules)
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Life Extension
L-Lysine - Essential Amino Acid Support – 620 MG (100 Capsules)
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GABA for Relaxation & Focus - 750 MG (90 Tablets)
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GABA for Relaxation & Focus - 750 MG (90 Tablets)
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Natural Recovery Powder - 7.7g of Amino Acids - Mixed Berry (11.1 oz./30 Servings)
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True Athlete
Natural Recovery Powder - 7.7g of Amino Acids - Mixed Berry (11.1 oz./30 Servings)
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L-Arginine Amino Acid - Supports Production of Nitric Oxide - 500 MG (100 Capsules)
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L-Carnitine Amino Acid - 500 MG (100 Capsules)
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Jarrow Formulas
L-Carnitine Amino Acid - 500 MG (100 Capsules)
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Carnipure L-Carnitine - Supports Cardiovascular Health, Energy Production & Fat Metabolism - 1,000 MG (50 Tablets)
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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.

Find Amino Acids at The Vitamin Shoppe Store Near You

There are more than 600 The Vitamin Shoppe® stores across the US, so it's very likely you can pop in and find Amino Acids locally. Check out our store locator to find a Shoppe near you. Don’t forget—you’ll save at least 15% on every subscription with Auto Delivery, plus an addition 5% off select brands to help you stay on the path. Not only will you never miss a thing, but you’ll also get free shipping on subscription refills of $25 or more!* You define what better looks (and feels) like—Count on us to help you get there.


Shipping & Returns

  • FREE for Orders over $35

    Orders under $35, domestic shipping is only $6.99. Find more at our Shipping Policy page.

    • Return Policy for Items Purchased Online

    Shop with confidence with our Easy Returns Policy. Customers may return any opened or unopened merchandise purchased from any Vitamin Shoppe channel to any Vitamin Shoppe store within 30 days. Find more at our full Returns Policy page.

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