Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
281
Swanson Ultra
Glycine Propionyl-L-Carnitine HCl GPLC 840 mg
80/100
capsule30 servings3 ingredients
282Swanson Premium Brand
5-HTP 50 mg
80/100
capsule30 servings1 ingredient
283
ON Optimum Nutrition
Instantized BCAA 5000 Powder
80/100
powder60 servings3 ingredients
284
Nutrex Research Basix Series
Lipo-6 Carnitine
80/100
capsule30 servings1 ingredient
285
Nutrex Research
Glutamine Drive Unflavored
80/100
powder200 servings1 ingredient
286
Nutrex Research Black Series
Glutamine Drive Unflavored
80/100
powder60 servings1 ingredient
287Swanson Ultra
GABAplex With L-Tyrosine & L-Theanine
80/100
capsule30 servings6 ingredients
288
Bluebonnet
DLPA 500 mg
80/100
capsule30 servings1 ingredient
289
Bluebonnet
L-Glutamine Powder
80/100
powder23 servings1 ingredient
290
Bluebonnet
5-HTP 100 mg
80/100
capsule30 servings1 ingredient
291
Bluebonnet
L-Theanine 150 mg
80/100
capsule30 servings1 ingredient
292Swanson Ultra
Pharmaceutical Grade AjiPure L-Methionine 500 mg
80/100
capsule30 servings1 ingredient
293
PS ProSupps
Glutamine 300
80/100
powder60 servings1 ingredient
294Swanson Premium Brand
Taurine 500 mg
80/100
capsule30 servings1 ingredient
295
Bluebonnet
L-Tryptophan 500 mg
80/100
capsule30 servings1 ingredient
296
ABB Performance
Gluta-Force Unflavored
80/100
powder95 servings1 ingredient
297Swanson Ultra
Pharmaceutical Grade AjiPure L-Glutamine Powder
80/100
powder68 servings1 ingredient
298Swanson Premium Brand
L-Ornithine Amino Acid 500 mg
80/100
capsule30 servings1 ingredient
299Swanson Ultra
Pharmaceutical Grade AjiPure Glycine
80/100
powder227 servings1 ingredient
300
Swanson Ultra
Pharmaceutical Grade AjiPure L-Serine 500 mg
80/100
capsule30 servings1 ingredient
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, Glycine Propionyl-L-Carnitine HCl GPLC 840 mg ranks #1 with a SupplementScore of 80/100. Scores are based on label quality - dosage transparency, formulation cleanliness, and ingredient disclosure.
How are amino acids supplements scored?
Every product is scored algorithmically using data from the NIH Dietary Supplement Label Database. The SupplementScore evaluates dosage transparency (35 pts), label completeness (25 pts), formulation cleanliness (25 pts), and ingredient profile (15 pts).
Does a higher score mean the supplement works better?
No. The score reflects label quality, how transparent and clean the product label is, not clinical efficacy, bioavailability, or safety. A higher score means better label practices, not guaranteed results.