Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
2541
New Sun
L-Lysine Amino Acid 500 mg
75/100
capsule100 servings1 ingredient
2542NOW
DMG 125 mg N, N-Dimethyl Glycine
75/100
capsule30 servings1 ingredient
2543
Nature's Plus
Inositol 600 mg
75/100
tablet30 servings1 ingredient
2544NOW
L-Arginine Amino Acid 500 mg
75/100
capsule50 servings1 ingredient
2545NOW
Double Strength L-Arginine Amino Acid 1000 mg
75/100
tablet30 servings1 ingredient
2546
NOW Shots
L-Carnitine 2,000 mg Acai Berry
75/100
liquid12 servings6 ingredients
2547NOW
GABA 750 mg
75/100
capsule30 servings1 ingredient
2548NOW
Glycine 1000 mg
75/100
capsule30 servings1 ingredient
2549
NOW
L-Tyrosine 500 mg
75/100
capsule30 servings1 ingredient
2550
Iron-Tek
Liquid Amino Complex Natural Orange Flavor
75/100
liquid10 servings17 ingredients
2551
Protocol For Life Balance
L-Arginine 500 mg
75/100
capsule90 servings1 ingredient
2552
Newflower Farmers Markets
L-Theanine 100 mg
75/100
capsule30 servings1 ingredient
2553
CHK Nutrition
5-HTP
75/100
capsule120 servings1 ingredient
2554
CHK Nutrition
L-Theanine 100 mg
75/100
capsule30 servings1 ingredient
2555
Bluebonnet
NAC 500 mg
75/100
capsule30 servings1 ingredient
2556
Bluebonnet
L-Tyrosine 500 mg
75/100
capsule30 servings1 ingredient
2557
Health Thru Nutrition Naturally
L-Carnitine Fumarate 440 mg
75/100
capsule30 servings1 ingredient
2558
Health Thru Nutrition Naturally
NAC 600 mg
75/100
capsule30 servings1 ingredient
2559
Gilad&Gilad
AgmaSet
75/100
capsule60 servings2 ingredients
2560
Windmill
L-Arginine HCl 500 mg
75/100
capsule30 servings1 ingredient
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, L-Lysine Amino Acid 500 mg ranks #1 with a SupplementScore of 75/100. 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.