Amino Acids

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Source Naturals L Tyrosine

SOURCE NATURALS - L-Tyrosine - 100 Tablets

$18.92

DESCRIPTIONL-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a precursor for the neurotransmitters dopamine, norepinephrine and epinephrine, for thyroid hormones, and for enkephalins, special peptides which subdue messages of physical discomfort. L-Tyrosine is also a precursor for the protective skin pigme...


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Source Naturals Acetyl L Carnitine

SOURCE NATURALS - Acetyl L-Carnitine 500 mg - 30 Tablets

$16.11

DESCRIPTIONAcetyl L-Carnitine is an amino acid-like compound that is related to choline and may assist in the conversion of choline into acetylcholine. Acetylcholine, one of the body's key neurotransmitters, chemically transmits messages from one nerve cell to another.DETAILSPackage Description: 30 TabletsServing Size: 1 TabletNumber of Serving...


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Source Naturals L Theanine

SOURCE NATURALS - L-Theanine (200 mg) - 60 Tablets

$46.23

DESCRIPTIONL-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain, and inhibits the stimulatory propertie...


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Source Naturals Acetyl L Carnitine

SOURCE NATURALS - Acetyl L-Carnitine 500 mg - 60 Tablets

$28.73

DESCRIPTIONAcetyl L-Carnitine is an amino acid-like compound that is related to choline and may assist in the conversion of choline into acetylcholine. Acetylcholine, one of the body's key neurotransmitters, chemically transmits messages from one nerve cell to another.DETAILSPackage Description: 60 TabletsServing Size: 1 TabletNumber of Serving...


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Healthy Origins L Glutathione Reduced 250 mg

HEALTHY ORIGINS - L-Glutathione Reduced 250 mg - 60 Capsules

$36.75

DESCRIPTIONHealthy Origins Setria L-Glutathione Reduced is a naturally derived substance that is a biologically active sulfur amino acid tripeptide compound containing three amino acids: L-Cystene, L-Glutamic Acid and Glycene. Our Setria brand of L-Glutathione Reduced is a trademark of Kyowa Hakko Kogyo Co., Ltd., and is produced exclusively in ...


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Source Naturals L Tryptophan 500 mg

SOURCE NATURALS - L-Tryptophan 500 mg - 60 Tablets

$31.54

DESCRIPTIONThe essential amino acid L-Tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body???s precursor to the kynurenines that regulate immunity...


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Source Naturals L Glutamine

SOURCE NATURALS - L-Glutamine - 100 Tablets

$19.59

DESCRIPTIONL-Glutamine, a free-form amino acid, can be converted to glutamic acid. Glutamic acid is a precursor to the important inhibitory neurotransmitter GABA (gamma-aminobutyric acid). L-Glutamine also plays an important role in ammonia disposal.DETAILSPackage Description: 100 TabletsServing Size: 1 TabletNumber of Servings: 100FACTS ...


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Source Naturals L Theanine

SOURCE NATURALS - L-Theanine (200 mg) - 30 Tablets

$24.16

DESCRIPTIONL-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain, and inhibits the stimulatory propertie...


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Twinlab L Tyrosine 500 mg

TWINLAB - L-Tyrosine 500 mg - 100 Capsules

$27.24

DESCRIPTIONL-Tyrosine is an essential amino acid important for the neurotransmitters: dopamine, norephrine, adrenalin and epinephrine. Tyrosine is suggested for depression, precursor of hormones, hypothyroidism, catecholestrogens, and the human pigment melanin.DETAILSPackage Description: 100 CapsulesServing Size: 1 CapsuleNumber of Servings: 100...


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Source Naturals L Carnitine

SOURCE NATURALS - L-Carnitine 500 mg - 30 Capsules

$25.92

DESCRIPTIONL-Carnitine is important for providing energy to muscles, and has been described as a "conditionally essential" nutrient for humans. 95% of all carnitine stores in the body are found in muscle tissue. It carries fatty acids into the mitochondria of each cell, where they are oxidized and stored as ATP, the body's prime energy fuel.DETA...


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Source Naturals L Leucine

SOURCE NATURALS - L-Leucine (500 mg) - 120 Capsules

$27.31

DESCRIPTIONL-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved in anabolic reactions. This makes them especially important for body builders and other athletes in sports that demand explosive strengt...


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Twinlab - L-Arginine Fuel 500 mg - 90 Capsules

TWINLAB - L-Arginine Fuel 500 mg - 90 Capsules

$31.40

DESCRIPTION• Maximum strength 500mg L-Arginine per serving• May help support healthy blood flow*• Does not contain allergens such as corn, soy, yeast, rice, barley, wheat (gluten), lactose, milk, citrus, fish and egg. How It Works:  L-Arginine is a precursor of nitric oxide, which increases blood flow and may aid in the delivery of important nut...


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Source Naturals L Lysine

SOURCE NATURALS - L-Lysine (500 mg) - 100 Capsules

$13.67

DESCRIPTIONL-Lysine is an essential free-form amino acid which acts as a precursor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial for the formation of collagen, a major part of the body's connective tissues. L-Lysine also contributes to energy production when converted to acetyl coenzyme A, ...


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Source Naturals L Tryptophan 500mg

SOURCE NATURALS - L-Tryptophan 500mg - 60 Tabs

$31.54

DESCRIPTIONThe essential amino acid L-tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, brain chemicals involved with mood and stress response. This tryptophan includes the activated coenzyme form of vitamin B-6 called P-5-P, which is required to convert tryp...


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Source Naturals L Theanine

SOURCE NATURALS - L-Theanine (200 mg) - 60 Capsules

$47.61

DESCRIPTIONL-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain, and inhibits the stimulatory propertie...


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Source Naturals DLPA

SOURCE NATURALS - DLPA (375 mg) - 120 Tablets

$27.31

DESCRIPTIONDL- Phenylalanine, or DLPA, is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). Researchers believe D-phenylalanine (DPA) inhibits the action of an enzyme that breaks down endorphins and enkephalins. These are proteins which bind to ...


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Source Naturals Taurine Powder

SOURCE NATURALS - Taurine Powder - 3.53 oz (100 gm)

$13.98

DESCRIPTIONTaurine is a crystalline, free-form amino acid. It is a soothing, inhibitory neurotransmitter and plays a major role in stabilizing the heartbeat and electrical activity of the nerves. Taurine is also necessary for the proper functioning of the "sodium/potassium ATP-ase pump", which regulates the ion balance between the cells and the ...


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Source Naturals L Valine 1 32 g Powder

SOURCE NATURALS - L-Valine 1.32 g Powder - 3.53 oz (100 gm)

$36.41

DESCRIPTIONL-Valine is an an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAA's stimulate protein synthesis directly in muscle tissue. Valine is a major fuel involved in anabolic (tissue-building) reactions, and stimulates muscle protein synthesis.DETAILSPackage Description: 3.53 oz (100 gm)Serving Size...


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Quantum Research Super Lysine Plus Liquid Extract

QUANTUM - Super Lysine - 2 oz

$27.04

DESCRIPTIONPotent, fast-acting liquid delivers L-lysine and LEM Shitake Mushroom extract along with a dynamic combination of supporting herbal extracts and vitamins. Great for those who prefer liquids.DETAILSPackage Description: 2 fl. oz. (60 ml)Serving Size: 30 DropsNumber of Servings: 80FACTS Serving Size: 30 Drops Servings per container...


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Source Naturals L Lysine 1000 mg

SOURCE NATURALS - L-Lysine 1000 mg - 100 Tablets

$18.21

DESCRIPTIONFree Form L-Lysine is an essential amino acid which acts as a precursor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a major part of the body's connective tissues. L-Lysine also contributes to energy production when converted to acetyl co...


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Source Naturals L Carnitine

SOURCE NATURALS - L-Carnitine (250 mg) - 30 Capsules

$15.40

DESCRIPTIONL-Carnitine is important for providing energy to muscles, and has been described as a "conditionally essential" nutrient for humans. 95% of all carnitine stores in the body are found in muscle tissue. It carries fatty acids into the mitochondria of each cell, where they are oxidized and stored as ATP, the body's prime energy fuel.DETA...


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Source Naturals N Acetyl L Tyrosine

SOURCE NATURALS - N-Acetyl L-Tyrosine - 30 Tablets

$12.96

DESCRIPTIONN-Acetyl L-Tyrosine is a more rapidly absorbed and bioavailable form of the amino acid L-tyrosine, and is less prone to urinary excretion. L-Tyrosine is converted in the body to key biologic compounds, including epinephrine, dopamine, L-dopa, Co-Q10, thyroid hormones, and melanin. The B vitamins pyridoxine (B-6), and folic acid are pr...


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Source Naturals L Carnitine

SOURCE NATURALS - L-Carnitine 500 mg - 60 Capsules

$49.00

DESCRIPTIONL-Carnitine is important for providing energy to muscles, and has been described as a "conditionally essential" nutrient for humans. 95% of all carnitine stores in the body are found in muscle tissue. It carries fatty acids into the mitochondria of each cell, where they are oxidized and stored as ATP, the body's prime energy fuel.DETA...


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Source Naturals Amino Day

SOURCE NATURALS - Amino Day (1000 mg) - 120 Tablets

$45.55

DESCRIPTIONAmino Day??? is a balanced combination of crystalline free-form amino acids that provides an efficient way to obtain quality nutrition during dieting. Plus, crystalline amino acids are fat free and very low in calories.DETAILSPackage Description: 120 TabletsServing Size: 3 TabletsNumber of Servings: 40FACTS Serving Size: 3 Tabl...


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Live Healthy with Amino Acid Supplements

Amino acids are the essential building blocks that are needed for proteins. They build cells, aid in the production of crucial enzymes, and repair damaged tissue to help the body heal faster. The human body uses 20 essential and non-essential amino acids to construct proteins. Twelve of the vital acids are created naturally within the human body, but eight of them have to be obtained from outside sources. Vitamin Grocer carries a huge selection of the best amino acid supplements on the market, to give our customers the essentials that they need to stay healthy, and to build a sufficient level of protein. Proteins are critical for every cell in the human body. They are important for muscles, tendons, ligaments, organs, nails, hair, glands, and many bodily fluids. In addition, they are required for healthy bone growth. Everyone breaks down proteins into amino acids differently, so deficiencies could be present. Things such as illness, stress, diet, or age all play a part in the body's ability to function correctly.

Our amino acid dietary supplement selection is vast, so there are plenty of products to try out until you find one that meets your needs. We offer supplements for most, if not all amino acids. Nature's Way Acetyl L-Carnitine capsules and Quantum Research Super Lysine Plus are both popular products that move quickly from our shelves. Acetyl L-Carnitine supports mental function, focus, and concentration, while Lysine is important to form collagen, absorb calcium, produce antibodies, repair tissue, and promote growth. Lysine cannot be produced by the body, so it is important to ensure that these supplements are taken if you want optimal health and wellness. Vitamin Grocer offers affordable prices on all of our products, so customers can stay healthy, even if they are on a budget.