Carlson
Glycine Powder
100 g
The label serving is half a teaspoon, or one level 2 g scoop, supplying 2 g glycine. The selected tub contains 100 g.
Read ingredients & context ↗Amino acids.
49 product profiles across 11 brands. Compare the selected format, ingredients and evidence before choosing.
Search and filter this category ↗A building block does not always need its own bottle
This collection includes protein-forming amino acids and related compounds such as taurine and carnosine. They do not all have the same roles. Some amino acids must come from food, while the body normally makes others. An isolated ingredient is different from a complete protein source; the exact compound and the reason for considering it both matter.
Read the evidence limits and sources
Evidence must match the exact ingredient and purpose. Findings for one amino acid cannot establish benefits for another. Oral carnosine is not equivalent to beta-alanine supplementation for increasing muscle carnosine. Animal longevity findings for taurine do not establish longer human life. Adequate nutrition and an identified reason to supplement are more useful than broad recovery or anti-ageing promises.
MedlinePlus · Amino acids ↗ · NIH Office of Dietary Supplements · Exercise and athletic performance ↗ · NIH · Taurine and ageing research ↗
Ingredient context reviewed 2026-10-26. General ingredient evidence does not verify the exact branded products below.
Explore amino acids products
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Carlson
L-Glutamine Powder
100 g
One teaspoon, or one level 3 g scoop, provides 3 g L-glutamine. The selected tub contains 100 g.
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Carlson
L-Lysine Powder
100 g
Half a teaspoon, or one level 1.2 g scoop, provides 960 mg L-lysine from L-lysine hydrochloride. The official tub contains 100 g.
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Carlson
Taurine Powder
100 g
One teaspoon, identified as one level 3.2 g scoop, provides 3.2 g taurine. The official pack contains 100 g.
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Doctor’s Best
L-Citrulline Powder
200 g
One approximately 3 g scoop provides 3 g L-citrulline, with no other ingredients listed. The 200 g tub contains about 66 servings.
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Doctor’s Best
L-Tyrosine — 500 mg
120 veggie capsules
Each one-capsule serving supplies 500 mg L-tyrosine; the bottle provides 120 servings.
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Doctor’s Best
Pure L-Arginine Powder
300 g
One approximately 6 g scoop supplies 6 g L-arginine hydrochloride, with no other ingredients listed. The 300 g tub provides about 50 servings.
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Doctor’s Best
Pure L-Glutamine Powder
300 g
One approximately 5 g scoop provides 5 g L-glutamine. The 300 g tub lists about 60 servings and no other ingredients.
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Jarrow Formulas
Arginine-Citrulline Sustain
120 Tablets — US label
Per 2 tablets: Vitamin C (as Calcium Ascorbate) 10 mg L-Arginine (Free Base) 500 mg L-Citrulline (Free Base) 500 mg.
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L-Glutamine - 1000mg Tablets
100 Easy-Solv tablets — US label
Per 1 tablet: L-Glutamine 1,000 mg.
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Jarrow Formulas
L-Glutamine — 750 mg
120 capsules · 750 mg per capsule
Each capsule supplies 750 mg L-glutamine. The manufacturer describes microbial fermentation as the ingredient source; the selected bottle contains 120 capsules.
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L-Tyrosine
100 Capsules — US label
Per 1 capsule: L-Tyrosine 500 mg.
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Neuro Optimizer
120 Capsules — US label
Per 4 capsules: Pantothenic Acid (as Calcium D-Pantothenate) 10 mg Acetyl-L-Carnitine (from Acetyl-L-Carnitine Hydrochloride) 500 mg L-Glutamine 500 mg Taurine 500 mg Cytidine 5'-Diphosphocholine 300 mg Phosphatidylcholine 120 mg Phosphatidylserine 100 mg.
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Jarrow Formulas
Taurine
100 Capsules — US label
Per 1 capsule: Taurine 1,000 mg.
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Life Extension
Carnosine — 500 mg
60 vegetarian capsules; one-capsule serving
The label lists 500 mg L-carnosine per vegetarian capsule. The bottle contains 60 capsules.
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Life Extension
Glycine — 1,000 mg
100 vegetarian capsules; one-capsule serving
The manufacturer lists 1,000 mg glycine per vegetarian capsule. The pictured bottle contains 100 capsules.
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Life Extension
L-Glutamine — 500 mg
100 vegetarian capsules; one-capsule serving
One capsule lists 500 mg L-glutamine as a free-form amino acid. The bottle contains 100 capsules and uses a vegetable-cellulose capsule.
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Life Extension
L-Lysine — 620 mg
100 vegetarian capsules; one-capsule serving
The manufacturer lists 620 mg L-lysine as L-lysine hydrochloride per vegetarian capsule. The selected bottle contains 100 capsules.
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Life Extension
Taurine — 1,000 mg
90 vegetarian capsules; one-capsule serving
The Supplement Facts panel lists 1,000 mg taurine per vegetarian capsule. The selected bottle contains 90 capsules.
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Momentous
L-Glutamine — Unflavoured Powder
300 g powder · 60 five-gram servings
The official jar shows a net weight of 300 g. Its Supplement Facts panel lists 5 g L-glutamine per one-scoop serving and 60 servings per container.
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Natural Factors
L-Lysine — 1000 mg
60 tablets
Each tablet supplies 1,000 mg L-lysine as hydrochloride.
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NOW Foods
GABA — 750 mg
100 veg capsules
The manufacturer lists 750 mg gamma-aminobutyric acid per capsule, with 100 one-capsule servings in the pictured pack.
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NOW Foods
Glycine — 1,000 mg
100 veg capsules; 33 three-capsule servings
The manufacturer lists 3 g free-form glycine per three capsules, equivalent to 1,000 mg per capsule. The selected bottle contains 100 capsules. Glycine is an amino acid and is not glutathione.
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NOW Foods
L-Arginine — 500 mg
100 veg capsules
Each two-capsule serving supplies 1,000 mg free-form L-arginine: 500 mg per capsule, with 50 servings in the shown bottle.
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NOW Foods
L-Carnosine — 500 mg
50 veg capsules
The one-capsule serving provides 500 mg L-carnosine (beta-alanyl-L-histidine). This is a dipeptide formula with 50 servings in the pictured pack.
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NOW Foods
L-Cysteine — 500 mg with Vitamins B6 & C
100 tablets
One tablet supplies 500 mg L-cysteine from 650 mg L-cysteine HCl, plus 60 mg vitamin C and 10 mg vitamin B6. The pictured pack has 100 tablets.
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NOW Foods
L-Ornithine — 500 mg
120 veg capsules
The three-capsule serving supplies 1,500 mg L-ornithine from 1,913 mg L-ornithine hydrochloride: 500 mg per capsule and 40 servings in the bottle.
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NOW Foods
Taurine — 1,000 mg
100 veg capsules
Manufacturer facts list 1,000 mg free-form taurine per one-capsule serving. The pack shown contains 100 capsules.
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Optimum Nutrition
Glutamine Powder — Unflavoured
Powder
The manufacturer lists 5 g of glutamine per serving. The photographed powder label uses a 5.2 g serving.
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Pure Encapsulations
L-Glutamine 500 mg
60 Capsules / 90 Capsules — US label
Per 1 capsule: 500 mg free-form L-glutamine.
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Pure Encapsulations
Taurine 1,000 mg
120 label servings (1 capsule per serving) — US label
Per 1 capsule: 1,000 mg free-form taurine.
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Pure Encapsulations
Taurine 500 mg
60 label servings (1 capsule per serving) — US label
Per 1 capsule: 500 mg free-form taurine.
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Solgar
BCAA Plus
100 vegetable capsules; 50 two-capsule servings
Per two capsules, the label lists 540 mg L-leucine, 360 mg L-isoleucine, 300 mg L-valine and 20 mg vitamin B6 as pyridoxine hydrochloride. The three amino acids total 1.2 g per serving.
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Solgar
GABA 500 mg Vegetable Capsules
50 vegetable capsules — US manufacturer listing
GABA (gamma-aminobutyric acid) 500 mg per vegetable capsule.
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Solgar
Glycine — 500 mg
100 vegetable capsules; one-capsule serving
The label lists 500 mg free-form glycine per vegetable capsule. The selected bottle contains 100 capsules.
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Solgar
L-Arginine — 500 mg
100 vegetable capsules; one-capsule serving
The Supplement Facts panel lists 500 mg free-form L-arginine per vegetable capsule. The photographed bottle contains 100 capsules.
Read ingredients & context ↗Products are arranged alphabetically by brand. Inclusion and ordering do not depend on an affiliate partnership. Check exact pack, seller and Indian delivery separately.