Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
3241
Windmill
L-Carnitine 500 mg
72/100
capsule30 servings1 ingredient
3242
Source Naturals
Acetyl L-Carnitine 250 mg
72/100
tablet30 servings1 ingredient
3243
Source Naturals
GABA 750 mg
72/100
tablet30 servings1 ingredient
3244Vital Nutrients
5HTP 50 mg
72/100
capsule30 servings3 ingredients
3245Vital Nutrients
5HTP 100 mg
72/100
capsule60 servings3 ingredients
3246Gaspari Nutrition
BCAA 6000
72/100
tablet30 servings6 ingredients
3247
OL Olympian Labs
BCAA with Alpha Ketoglutarate
72/100
tablet30 servings1 ingredient
3248
up&up
L-Lysine 500 mg
72/100
tablet30 servings1 ingredient
3249
Botanic Choice
Advanced Energize 10 Complex
72/100
capsule30 servings3 ingredients
3250
Natrol
L-Arginine 3,000 mg
72/100
tablet30 servings4 ingredients
3251NOW Sports
Arginine & Citrulline 500/250
72/100
capsule30 servings2 ingredients
3252
Arazo Nutrition
L-Carnitine 1000 mg
72/100
tablet60 servings1 ingredient
3253
Vitamin World
L-Carnitine Fumarate 1000 mg
72/100
tablet30 servings1 ingredient
3254NOW Sports
Arginine & Citrulline 500 mg/250 mg
72/100
capsule30 servings2 ingredients
3255NOW Sports
Arginine & Citrulline 500 mg / 250 mg
72/100
capsule30 servings2 ingredients
3256
BioGenesis Nutraceuticals
Muscle-Aid
72/100
powder30 servings20 ingredients
3257
Jarrow Formulas
L-Tryptophan Peptide
72/100
tablet30 servings1 ingredient
3258
Solgar
L-Arginine 1000 mg
72/100
tablet30 servings1 ingredient
3259
Solgar
Acetyl L-Carnitine 1000 mg
72/100
tablet30 servings1 ingredient
3260
Solgar
5-HTP 100 mg
72/100
capsule30 servings4 ingredients
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, L-Carnitine 500 mg ranks #1 with a SupplementScore of 72/100. 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.