Skip to content

Amino Acids

Amino acid supplements as single amino acids, blends and powders. The collection covers the ones people most often look for: NAC (N-acetyl-L-cysteine), L-glutamine in capsules and bulk powder, glutathione including liposomal glutathione, L-theanine, taurine, glycine, L-tryptophan, L-lysine, GABA, creatine, acetyl-L-carnitine and branched-chain amino acids (BCAAs). Most are capsules or powders, with some liquids and tablets. Brands include Pure Encapsulations, Life Extension, Thorne, Protocol For Life Balance and DaVinci Laboratories. Each product page shows the amount per serving and whether the amino acid is in free form or part of a blend, so compare the supplement facts rather than the front label. Sorted by best-selling; filter by brand or form.

Related: Protein Powder, Sports Performance, Liver Support.

L-Glutamine (100 Capsules)

Klaire Labs - SFI Health
Original price $ 26.99 - Original price $ 26.99
Original price
$ 26.99
$ 26.99 - $ 26.99
Current price $ 26.99

L-Glutamine (100 Capsules) by Klaire Labs - SFI Health is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule, 1 to 4...

View full details

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

Metabolic Maintenance
Original price $ 32.00 - Original price $ 32.00
Original price
$ 32.00
$ 32.00 - $ 32.00
Current price $ 32.00

NAC (N-Acetyl-L-Cysteine) (60 Capsules) by Metabolic Maintenance is a dietary supplement in capsule form. Manufacturer Suggested Use: One (1) caps...

View full details

Essential Aminos (180 Capsules)

Pure Encapsulations
Original price $ 55.00 - Original price $ 55.00
Original price
$ 55.00
$ 55.00 - $ 55.00
Current price $ 55.00

Essential Aminos (180 Capsules) by Pure Encapsulations is a dietary supplement in capsule form. Attributes: Vegetarian. Manufacturer Suggested Us...

View full details

Amino Complex

Thorne
Original price $ 52.00 - Original price $ 56.00
Original price
$ 52.00 - $ 56.00
$ 52.00 - $ 56.00
Current price $ 52.00

Amino Complex by Thorne is a dietary supplement in powder form. Available in multiple flavors and sizes. Manufacturer Suggested Use: Mix 1 scoop w...

View full details

Acetyl-L-Carnitine Arginate (90 Capsules)

Life Extension
Original price $ 38.00
Original price $ 38.00 - Original price $ 38.00
Original price $ 38.00
Current price $ 28.50
$ 28.50 - $ 28.50
Current price $ 28.50

Acetyl-L-Carnitine Arginate (90 Capsules) by Life Extension is a dietary supplement in capsule form. Manufacturer Suggested Use: Take one (1) caps...

View full details

UltraDetox 10-Day Pure Pack (10 Packets)

Pure Encapsulations
Original price $ 75.50 - Original price $ 75.50
Original price
$ 75.50
$ 75.50 - $ 75.50
Current price $ 75.50

UltraDetox 10-Day Pure Pack (10 Packets) by Pure Encapsulations is a dietary supplement in packet form. Attributes: Vegetarian. Manufacturer Sugg...

View full details

BCAA Capsules

Pure Encapsulations
Original price $ 29.50 - Original price $ 67.00
Original price
$ 29.50 - $ 67.00
$ 29.50 - $ 67.00
Current price $ 29.50

BCAA Capsules by Pure Encapsulations is a dietary supplement in capsule form. Available in multiple sizes. Attributes: Vegetarian. Manufacturer S...

View full details

L-Glutamine

Protocol For Life Balance
Original price $ 27.00 - Original price $ 27.00
Original price
$ 27.00
$ 27.00 - $ 27.00
Current price $ 27.00

L-Glutamine by Protocol For Life Balance is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 to 5 capsules daily, or as di...

View full details

L-Theanine

Xymogen
Original price $ 56.99 - Original price $ 89.99
Original price
$ 56.99 - $ 89.99
$ 56.99 - $ 89.99
Current price $ 56.99

L-Theanine by Xymogen is a dietary supplement in capsule form. Available in multiple sizes. Manufacturer Suggested Use: Take one to two capsules t...

View full details

PharmaGABA (100 mg) (60 Capsules)

Thorne
Original price $ 34.00 - Original price $ 34.00
Original price
$ 34.00
$ 34.00 - $ 34.00
Current price $ 34.00

PharmaGABA (100 mg) (60 Capsules) by Thorne is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule one to three times...

View full details

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

L-Glutamine Powder (100 g Powder) by Life Extension is a dietary supplement in powder form. Manufacturer Suggested Use: Take 1/2 teaspoon daily on...

View full details

BPC Rapid Pro (60 Capsules)

InfiniWell
Original price $ 159.99 - Original price $ 159.99
Original price
$ 159.99
$ 159.99 - $ 159.99
Current price $ 159.99

BPC Rapid Pro (60 Capsules) by InfiniWell is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule twice daily or as di...

View full details

L-Serine (60 Capsules)

Douglas Laboratories
Original price $ 53.00 - Original price $ 53.00
Original price
$ 53.00
$ 53.00 - $ 53.00
Current price $ 53.00

L-Serine (60 Capsules) by Douglas Laboratories is a dietary supplement in capsule form. Manufacturer Suggested Use: As a dietary supplement, adult...

View full details

UltraMeal Advanced Protein

Metagenics
Original price $ 68.95 - Original price $ 68.95
Original price
$ 68.95
$ 68.95 - $ 68.95
Current price $ 68.95

UltraMeal Advanced Protein by Metagenics is a dietary supplement in powder form. Available in multiple flavors. Manufacturer Suggested Use: Take o...

View full details

Theanine Serene with Relora (60 Tablets)

Source Naturals
Original price $ 19.98 - Original price $ 19.98
Original price
$ 19.98
$ 19.98 - $ 19.98
Current price $ 19.98

Theanine Serene with Relora (60 Tablets) by Source Naturals is a dietary supplement in tablet form. Manufacturer Suggested Use: 2 tablets daily. ...

View full details

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

Life Extension Mix Without Copper (360 Capsules) by Life Extension is a dietary supplement in capsule form. Manufacturer Suggested Use: Take twelv...

View full details

UltraClear Detox Powder (Vanilla) (21 Servings)

Metagenics
Original price $ 115.95 - Original price $ 115.95
Original price
$ 115.95
$ 115.95 - $ 115.95
Current price $ 115.95

UltraClear Detox Powder (Vanilla) (21 Servings) by Metagenics is a dietary supplement in powder form. Manufacturer Suggested Use: Shake canister b...

View full details

L-Theanine (60 Capsules)

Ortho Molecular Products

To order this item, please log in first.

Click here to log in or create an account.

L-Theanine (60 Capsules) by Ortho Molecular Products is a dietary supplement in capsule form. Manufacturer Suggested Use: 1 capsule per day or as ...

View full details

L-Glutamine 85 Servings

Xymogen
Original price $ 72.99 - Original price $ 72.99
Original price
$ 72.99
$ 72.99 - $ 72.99
Current price $ 72.99

L-Glutamine 85 Servings by Xymogen is a dietary supplement in powder form. Manufacturer Suggested Use: Take one scoop daily, mixed with plain wate...

View full details

Ultra Glucose Control

Metagenics
Original price $ 84.95 - Original price $ 144.95
Original price
$ 84.95 - $ 144.95
$ 84.95 - $ 144.95
Current price $ 84.95

Ultra Glucose Control by Metagenics is a dietary supplement in powder form. Available in multiple flavors and sizes. Manufacturer Suggested Use: B...

View full details

BPC Delayed Pro (60 Capsules)

InfiniWell
Original price $ 159.99 - Original price $ 159.99
Original price
$ 159.99
$ 159.99 - $ 159.99
Current price $ 159.99

BPC Delayed Pro (60 Capsules) by InfiniWell is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule twice daily or as ...

View full details

L-Theanine (200 mg)

Vital Nutrients
Original price $ 38.99 - Original price $ 70.99
Original price
$ 38.99 - $ 70.99
$ 38.99 - $ 70.99
Current price $ 38.99

L-Theanine (200 mg) by Vital Nutrients is a dietary supplement in capsule form. Available in multiple sizes. Manufacturer Suggested Use: Take 1 ca...

View full details

NAC (N-Acetyl-L-Cysteine) (180 Capsules)

Karuna
Original price $ 46.50 - Original price $ 46.50
Original price
$ 46.50
$ 46.50 - $ 46.50
Current price $ 46.50

NAC (N-Acetyl-L-Cysteine) (180 Capsules) by Karuna is a dietary supplement in capsule form. Manufacturer Suggested Use: 2 - 6 capsules per day, in...

View full details

Amino NAC (500 mg) (60 Capsules)

Genestra
Original price $ 33.50 - Original price $ 33.50
Original price
$ 33.50
$ 33.50 - $ 33.50
Current price $ 33.50

Amino NAC (500 mg) (60 Capsules) by Genestra is a dietary supplement in capsule form. Manufacturer Suggested Use: Adult Smokers, Adults with Chron...

View full details

BCAA Powder (227 Grams)

Pure Encapsulations
Original price $ 63.00 - Original price $ 63.00
Original price
$ 63.00
$ 63.00 - $ 63.00
Current price $ 63.00

BCAA Powder (227 Grams) by Pure Encapsulations is a dietary supplement in powder form. Attributes: Vegetarian. Manufacturer Suggested Use: As a d...

View full details

Klean Essential Aminos +HMB

Klean Athlete
Original price $ 78.00 - Original price $ 78.00
Original price
$ 78.00
$ 78.00 - $ 78.00
Current price $ 78.00

Klean Essential Aminos +HMB by Klean Athlete is a dietary supplement in powder form. Manufacturer Suggested Use: As a dietary supplement, adults t...

View full details

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

L-Tryptophan (500 mg) (90 Capsules) by Life Extension is a dietary supplement in capsule form.

Cocoa HGH (16.4 Ounces Powder)

DaVinci Laboratories
Original price $ 87.32 - Original price $ 87.32
Original price
$ 87.32
$ 87.32 - $ 87.32
Current price $ 87.32

Cocoa HGH (16.4 Ounces Powder) by DaVinci Laboratories is a dietary supplement in powder form. Manufacturer Suggested Use: As a dietary supplement...

View full details

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

L-Lysine (100 Capsules) by Klaire Labs - SFI Health is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule, 1 to 6 ti...

View full details

L-Tyrosine (500 mg) (100 Capsules)

Allergy Research Group
Original price $ 25.99 - Original price $ 25.99
Original price
$ 25.99
$ 25.99 - $ 25.99
Current price $ 25.99

L-Tyrosine (500 mg) (100 Capsules) by Allergy Research Group is a dietary supplement in capsule form. Manufacturer Suggested Use: As a dietary sup...

View full details

Creatine + Alpha GPC (231 Grams Powder)

Thorne
Original price $ 49.00 - Original price $ 49.00
Original price
$ 49.00
$ 49.00 - $ 49.00
Current price $ 49.00

Creatine + Alpha GPC (231 Grams Powder) by Thorne is a dietary supplement in level powder form. Key Ingredients: Creatine Monohydrate, Alpha-GPC. ...

View full details

Taurine 1000 mg (120 Capsules)

Vital Nutrients
Original price $ 25.99 - Original price $ 25.99
Original price
$ 25.99
$ 25.99 - $ 25.99
Current price $ 25.99

Taurine 1000 mg (120 Capsules) by Vital Nutrients is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 2 vegan capsules, twic...

View full details

L-Glutamine Powder (1 Pounds)

Protocol For Life Balance
Original price $ 42.00 - Original price $ 42.00
Original price
$ 42.00
$ 42.00 - $ 42.00
Current price $ 42.00

L-Glutamine Powder (1 Pounds) by Protocol For Life Balance is a dietary supplement in rounded teaspoon form. Manufacturer Suggested Use: Mix 1 rou...

View full details

L-Arginine (120 Tablets)

Protocol For Life Balance
Original price $ 32.00 - Original price $ 32.00
Original price
$ 32.00
$ 32.00 - $ 32.00
Current price $ 32.00

L-Arginine (120 Tablets) by Protocol For Life Balance is a dietary supplement in tablet form. Manufacturer Suggested Use: Take 1 tablet twice dail...

View full details

L-Lysine 500 mg (100 Capsules)

Vital Nutrients
Original price $ 15.99 - Original price $ 15.99
Original price
$ 15.99
$ 15.99 - $ 15.99
Current price $ 15.99

L-Lysine 500 mg (100 Capsules) by Vital Nutrients is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1-3 capsules, 1-3 time...

View full details

L-Lysine (90 Capsules)

Xymogen
Original price $ 28.99 - Original price $ 28.99
Original price
$ 28.99
$ 28.99 - $ 28.99
Current price $ 28.99

L-Lysine (90 Capsules) by Xymogen is a dietary supplement in capsule form. Manufacturer Suggested Use: Preferably on an empty stomach, take one to...

View full details

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

DaVinci Laboratories
Original price $ 28.40 - Original price $ 28.40
Original price
$ 28.40
$ 28.40 - $ 28.40
Current price $ 28.40

NAC (N-Acetyl Cysteine) (500 mg) (90 Capsules) by DaVinci Laboratories is a dietary supplement in capsule form. Manufacturer Suggested Use: As a d...

View full details

Klean BCAA + PEAK ATP (258 Grams)

Klean Athlete
Original price $ 59.60 - Original price $ 59.60
Original price
$ 59.60
$ 59.60 - $ 59.60
Current price $ 59.60

Klean BCAA + PEAK ATP (258 Grams) by Klean Athlete is a dietary supplement in powder form. Manufacturer Suggested Use: Mix one scoop with 8-10 oz....

View full details

Klean Glutamine (491 Grams Powder)

Klean Athlete
Original price $ 65.00 - Original price $ 65.00
Original price
$ 65.00
$ 65.00 - $ 65.00
Current price $ 65.00

Klean Glutamine (491 Grams Powder) by Klean Athlete is a dietary supplement in powder form. Manufacturer Suggested Use: As a dietary supplement, a...

View full details

Glycine Pure Powder (1 Pound)

NOW
Original price $ 29.99 - Original price $ 29.99
Original price
$ 29.99
$ 29.99 - $ 29.99
Current price $ 29.99

Glycine Pure Powder (1 Pound) by NOW is a dietary supplement in powder form. Manufacturer Suggested Use: Take 1/4 - 3/4 level teaspoon daily mixed...

View full details

Amino 21 (90 Capsules)

DaVinci Laboratories
Original price $ 36.00 - Original price $ 36.00
Original price
$ 36.00
$ 36.00 - $ 36.00
Current price $ 36.00

Amino 21 (90 Capsules) by DaVinci Laboratories is a dietary supplement in capsule form. Manufacturer Suggested Use: As a dietary supplement, take ...

View full details

L-Glutamine Powder (30 5 grams)

DaVinci Laboratories
Original price $ 45.64 - Original price $ 45.64
Original price
$ 45.64
$ 45.64 - $ 45.64
Current price $ 45.64

L-Glutamine Powder (30 5 grams) by DaVinci Laboratories is a dietary supplement in powder form. Manufacturer Suggested Use: As a dietary supplemen...

View full details

Pure L-Threonine (500 mg) (100 Capsules)

Montiff
Original price $ 33.00 - Original price $ 33.00
Original price
$ 33.00
$ 33.00 - $ 33.00
Current price $ 33.00

Pure L-Threonine (500 mg) (100 Capsules) by Montiff is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1-2 capsules per day...

View full details

L-Tryptophan (1000 mg) (60 Tablets)

Protocol For Life Balance
Original price $ 39.00 - Original price $ 39.00
Original price
$ 39.00
$ 39.00 - $ 39.00
Current price $ 39.00

L-Tryptophan (1000 mg) (60 Tablets) by Protocol For Life Balance is a dietary supplement in tablet form. Manufacturer Suggested Use: Take 1 tablet...

View full details

Taurine (100 Capsules)

Protocol For Life Balance
Original price $ 15.00 - Original price $ 15.00
Original price
$ 15.00
$ 15.00 - $ 15.00
Current price $ 15.00

Taurine (100 Capsules) by Protocol For Life Balance is a dietary supplement in capsule form. Manufacturer Suggested Use: Take 1 capsule 1 to 2 tim...

View full details

Glutathione Precursors (30 Capsules)

Genestra
Original price $ 37.00 - Original price $ 37.00
Original price
$ 37.00
$ 37.00 - $ 37.00
Current price $ 37.00

Glutathione Precursors (30 Capsules) by Genestra is a dietary supplement in capsule form. Manufacturer Suggested Use: Take one capsule daily with ...

View full details

Premier Aminos-FX

Premier Research Labs
Original price $ 38.35 - Original price $ 38.35
Original price $ 38.35
$ 47.99
$ 47.99 - $ 47.99
Current price $ 47.99

Premier Aminos-FX by Premier Research Labs is a dietary supplement in powder form. Available in multiple flavors.

Whey Protein (476 Grams Powder)

Premier Research Labs
Original price $ 36.96 - Original price $ 36.96
Original price $ 36.96
$ 71.99
$ 71.99 - $ 71.99
Current price $ 71.99

Whey Protein (476 Grams Powder) by Premier Research Labs is a dietary supplement in powder form.