Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
641Swanson
Glutamic Acid 500 mg
77/100
capsule60 servings1 ingredient
642Swanson
Inosine
77/100
capsule60 servings1 ingredient
643Swanson
L-Ornithine 500 mg
77/100
capsule30 servings1 ingredient
644Swanson
GABA 750 mg Maximum Strength
74/100
capsule60 servings1 ingredient
645Swanson
SAMe 200 mg
71/100
tablet30 servings1 ingredient
646Swanson
Suntheanine L-Theanine 100 mg
80/100
capsule60 servings1 ingredient
647Swanson
Taurine 500 mg
77/100
capsule100 servings1 ingredient
648Swanson
TMG 500 mg
74/100
capsule45 servings1 ingredient
649NutraBio
Alpha EAA Peach Tea
43/100
powder30 servings7 ingredients
650Nature's Truth
L-Lysine 1,000 mg
72/100
tablet100 servings1 ingredient
651RSP
AminoLean Pink Lemonade
54/100
powder30 servings6 ingredients
652RSP
AminoLean Watermelon
53/100
powder30 servings7 ingredients
653RSP
AminoLean Max Maui Pineapple
34/100
powder25 servings3 ingredients
654Sports Research
L-Theanine + Caffeine
71/100
softgel60 servings5 ingredients
655Nutricost Performance
Intra Blue Raspberry
62/100
powder30 servings17 ingredients
656Nutricost
L-Arginine 500 mg & L-Citrulline 250 mg
75/100
capsule120 servings2 ingredients
657ON Optimum Nutrition
Essential Amin.O. Energy Green Apple
46/100
powder30 servings4 ingredients
658NOW
GABA Pure Powder
80/100
powder340 servings1 ingredient
659Nutri
GLYNAC-ET 1050/100 mg
81/100
capsule30 servings4 ingredients
660Kirkman
Taurine 325 mg
80/100
capsule250 servings1 ingredient
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 775 amino acids products, Glutamic Acid 500 mg ranks #1 with a SupplementScore of 77/100. 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.