Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
661Natural Factors Stress-Relax
Suntheanine
64/100
tablet60 servings3 ingredients
662iSatori
L-Carnitine LS3 3000 Lemon Lime
63/100
liquid32 servings1 ingredient
663iSatori
L-Carnitine LS3 1500 Pink Lemonade
63/100
liquid32 servings1 ingredient
664iSatori
L-Carnitine LS3 3000 Gummy Bear
63/100
liquid32 servings1 ingredient
665Natural Factors
Pharma GABA Fast Acting 100 mg
63/100
tablet30 servings3 ingredients
666iSatori
Liquid L-Carnitine LS3 Pink Lemonade
63/100
liquid31 servings1 ingredient
667Natural Factors Stress-Relax
Suntheanine L-Theanine
63/100
tablet30 servings3 ingredients
668Animal
Animal Juiced Aminos Grape Juiced
62/100
powder30 servings2 ingredients
669Natural Factors
Pharma GABA
62/100
tablet30 servings5 ingredients
670Irwin Naturals
Double Potency 5-HTP Extra
62/100
softgel30 servings16 ingredients
671Source Naturals
L-Phenylalanine 500 mg
62/100
tablet50 servings2 ingredients
672Source Naturals
L-Tyrosine 500 mg
62/100
tablet100 servings2 ingredients
673Source Naturals
L-Tryptophan 1,000 mg
62/100
tablet45 servings2 ingredients
674Mason Natural
L-Lysine 500 mg
62/100
tablet100 servings2 ingredients
675Nutricost Performance
Intra Pink Lemonade
62/100
powder30 servings17 ingredients
676Nutricost Performance
Intra Blue Raspberry
62/100
powder30 servings17 ingredients
677Natrol
5-HTP 100 mg Wild Berry Flavor
62/100
tablet30 servings1 ingredient
678Source Naturals
L-Phenylalanine
62/100
tablet50 servings2 ingredients
679Source Naturals
Acetyl L-Carnitine & Alpha-Lipoic Acid 650 mg
61/100
tablet30 servings3 ingredients
680Natrol
5-HTP 200 mg Time Release
61/100
tablet30 servings2 ingredients
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 775 amino acids products, Suntheanine ranks #1 with a SupplementScore of 64/100. 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.