Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
1101
BioAnue
Acetyl-L-Carnitine
80/100
capsule10 servings1 ingredient
1102Best Naturals
L-Glutamine Pure Powder
80/100
powder90 servings1 ingredient
1103
Best Naturals
L-Lysine Pure Powder
80/100
powder822 servings1 ingredient
1104
Best Naturals
Taurine Pure Powder
80/100
tablet454 servings1 ingredient
1105
GNC Pro Performance
L-Carnitine
80/100
tablet30 servings1 ingredient
1106
GNC Pro Performance
L-Arginine L-Ornithine
80/100
tablet15 servings2 ingredients
1107
Ecological Formulas
Free-Form Amino Acids
80/100
powder50 servings2 ingredients
1108
GNC Pro Performance
L-Glutamine
80/100
capsule90 servings1 ingredient
1109
GNC Pro Performance
RapidDrive BCAA 5000 Unflavored
80/100
powder50 servings3 ingredients
1110
GNC Pro Performance
RapidDrive Arginine 5000 Unflavored
80/100
powder80 servings1 ingredient
1111
Remedys Nutrition
HMB 1000 mg
80/100
capsule60 servings1 ingredient
1112Lake Avenue Nutrition
Instantized BCAA Unflavored
80/100
powder171 servings3 ingredients
1113
Lake Avenue Nutrition
L-Glutamine 5,000 mg
80/100
powder181 servings1 ingredient
1114Source Naturals
L-Glutamine
80/100
powder50 servings2 ingredients
1115Lake Avenue Nutrition
L-Serine 900 mg
80/100
capsule120 servings1 ingredient
1116Source Naturals
Taurine Powder
80/100
powder148 servings1 ingredient
1117
Lake Avenue Nutrition
L-Serine Powder Unflavored
80/100
powder100 servings1 ingredient
1118
Lake Avenue Nutrition
L-Theanine 100 mg
80/100
capsule180 servings1 ingredient
1119
Nutricost
N-Acetyl L-Tyrosine 400 mg
80/100
powder250 servings1 ingredient
1120California Gold Nutrition
5-HTP 100 mg
80/100
capsule90 servings1 ingredient
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, Acetyl-L-Carnitine 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.