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Products

L-Glutamine (351 grams)

Klaire Labs - SFI Health
Original price $ 50.99 - Original price $ 50.99
Original price
$ 50.99
$ 50.99 - $ 50.99
Current price $ 50.99

Glutamine, the most abundant amino acid in the body, helps form other amino acids, glucose, protein, and glutathione. Glutamine is stored in the ...

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L-Glutamine (90 Capsules)

Thorne
Original price $ 23.00 - Original price $ 23.00
Original price
$ 23.00
$ 23.00 - $ 23.00
Current price $ 23.00

Helps with muscle cell repair post-exercise and promotes gastrointestinal and immune system health* L-glutamine is an amino acid that supports a he...

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L-Glutamine 85 Servings

Xymogen
Original price $ 64.99 - Original price $ 64.99
Original price
$ 64.99
$ 64.99 - $ 64.99
Current price $ 64.99

L-Glutamine is the most abundant amino acid in the body and is necessary for the maintenance of many metabolic functions. Under situations of stre...

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L-Glutamine Powder (1 Pounds)

Protocol For Life Balance
Original price $ 40.00 - Original price $ 40.00
Original price
$ 40.00
$ 40.00 - $ 40.00
Current price $ 40.00

Glutamine, the most abundant amino acid in the body, is an important constituent of proteins and participates in many key metabolic processes.* Gl...

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L-Glutamine Powder (100 g Powder)

Life Extension
Original price $ 22.00
Original price $ 22.00 - Original price $ 22.00
Original price $ 22.00
Current price $ 16.50
$ 16.50 - $ 16.50
Current price $ 16.50

Glutamine is an amino acid that serves as a building block for proteins. It is also an important fuel for immune cells that promote optimal immune ...

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l-Glutamine Powder (227 Grams)

Pure Encapsulations
Original price $ 53.40 - Original price $ 53.40
Original price
$ 53.40
$ 53.40 - $ 53.40
Current price $ 53.40

Nutritionally supports the mucosal lining and the healthy functioning of the gastrointestinal tract, as well as lean muscle mass Supports gastroin...

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L-Glutamine Powder (510 Grams)

Thorne
Original price $ 63.00 - Original price $ 63.00
Original price
$ 63.00
$ 63.00 - $ 63.00
Current price $ 63.00

Helps with muscle cell repair post-exercise and promotes gastrointestinal and immune system health* L-glutamine is an amino acid that supports a h...

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L-Lysine (100 Capsules)

Klaire Labs - SFI Health
Original price $ 17.99 - Original price $ 17.99
Original price
$ 17.99
$ 17.99 - $ 17.99
Current price $ 17.99

Essential amino acid One of the 9 essential amino acids that must be obtained from food, L-lysine is a key player in enzyme production, collagen f...

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L-Lysine (90 Capsules)

Xymogen
Original price $ 23.99 - Original price $ 23.99
Original price
$ 23.99
$ 23.99 - $ 23.99
Current price $ 23.99

L-Lysine is an amino acid essential in human physiology. Lysine is vital for normal growth and for the manufacture of collagen, a substance import...

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L-Lysine 500 mg (100 Capsules)

Vital Nutrients
Original price $ 14.90 - Original price $ 14.90
Original price
$ 14.90
$ 14.90 - $ 14.90
Current price $ 14.90

Lysine is an essential amino acid necessary for protein synthesis and to help maintain nitrogen balance in the body*. It provides nutritional supp...

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L-Methionine (60 Capsules)

Douglas Laboratories
Original price $ 28.00 - Original price $ 28.00
Original price
$ 28.00
$ 28.00 - $ 28.00
Current price $ 28.00

L-Methionine 500 mg capsule L-Methionine supplies 500 mg of this essential amino acid.

L-Serine (60 Capsules)

Douglas Laboratories
Original price $ 50.80 - Original price $ 50.80
Original price
$ 50.80
$ 50.80 - $ 50.80
Current price $ 50.80

L-Serine 500 mg capsule L-Serine supplies 500 mg of the amino acid in each capsule.

L-Theanine

Xymogen
Original price $ 52.99 - Original price $ 83.99
Original price
$ 52.99 - $ 83.99
$ 52.99 - $ 83.99
Current price $ 52.99

L-Theanine is a naturally occurring, unique amino acid found in green tea leaves. L-theanine has been found to reduce stress by promoting relaxati...

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L-Theanine (200 mg)

Vital Nutrients
Original price $ 19.90 - Original price $ 36.90
Original price
$ 19.90 - $ 36.90
$ 19.90 - $ 36.90
Current price $ 19.90

L-Theanine is a unique amino acid present almost exclusively in the tea plant (Camellia sinensis).* Theanine helps maintain a sense of well-being ...

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L-Theanine 100 mg (60 Capsules)

Life Extension
Original price $ 24.00
Original price $ 24.00 - Original price $ 24.00
Original price $ 24.00
Current price $ 18.00
$ 18.00 - $ 18.00
Current price $ 18.00

Theanine is the predominant amino acid of tea that produces calming effects in the brain by increasing levels of serotonin and dopamine, and blocki...

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L-Tryptophan (1000 mg) (60 Tablets)

Protocol For Life Balance
Original price $ 38.00 - Original price $ 38.00
Original price
$ 38.00
$ 38.00 - $ 38.00
Current price $ 38.00

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. In the brain, Tryptophan...

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L-Tryptophan (500 mg)

Protocol For Life Balance
Original price $ 22.00 - Original price $ 40.00
Original price
$ 22.00 - $ 40.00
$ 22.00 - $ 40.00
Current price $ 22.00

L-tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. In the brain, tryptophan...

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L-Tryptophan (500 mg) (90 Capsules)

Life Extension
Original price $ 33.00
Original price $ 33.00 - Original price $ 33.00
Original price $ 33.00
Current price $ 24.75
$ 24.75 - $ 24.75
Current price $ 24.75

Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep. Your body requires the essential amino acid trypto...

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L-Tryptophan (90 Capsules)

Klaire Labs - SFI Health
Original price $ 43.99 - Original price $ 43.99
Original price
$ 43.99
$ 43.99 - $ 43.99
Current price $ 43.99

Essential amino acid This essential alpha-amino acid helps make proteins and brain-signaling chemicals like the neurotransmitters serotonin and mel...

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Life Extension Mix Without Copper (360 Capsules)

Life Extension
Original price $ 78.00
Original price $ 78.00 - Original price $ 78.00
Original price $ 78.00
Current price $ 58.50
$ 58.50 - $ 58.50
Current price $ 58.50

Eating fruits and vegetables is good for the body. Getting the recommended daily servings is the hard part. That's why we created Life Extension M...

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Liposomal Glutathione

Pure Encapsulations
Original price $ 62.80 - Original price $ 109.00
Original price
$ 62.80 - $ 109.00
$ 62.80 - $ 109.00
Current price $ 62.80

Glutathione is found in virtually every cell of the body and plays a critical role in protein synthesis, enzyme function, transport, and cell matur...

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N-Acetyl Cysteine (NAC) (500 mg) (90 Capsules)

Klaire Labs - SFI Health
Original price $ 24.99 - Original price $ 24.99
Original price
$ 24.99
$ 24.99 - $ 24.99
Current price $ 24.99

This derivative of the amino acid cysteine is often used as the preferred substrate for intracellular glutathione synthesis. It also assists liver...

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N-Acetyl-L-Cysteine (NAC) (600 mg) (60 Capsules)

Life Extension
Original price $ 16.00
Original price $ 16.00 - Original price $ 16.00
Original price $ 16.00
Current price $ 12.00
$ 12.00 - $ 12.00
Current price $ 12.00

We have many different brands of NAC available. Click here for all our current NAC options.   A Best Seller, N-Acetyl-L-Cysteine (a.k.a. NAC...

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N-Acetyl-L-Cysteine (NAC) (600 mg) (90 Capsules)

Douglas Laboratories
Original price $ 30.60 - Original price $ 30.60
Original price
$ 30.60
$ 30.60 - $ 30.60
Current price $ 30.60

Respiratory health and detoxification support‡ N-Acetyl-L-Cysteine (NAC) is a cellular antioxidant support that specifically promotes healthy lun...

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