Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
561Vitamatic
L-Carnitine 1000 mg
74/100
capsule60 servings1 ingredient
562Vitamatic
L-Threonine 500 mg
74/100
capsule120 servings1 ingredient
563Thorne Research
Amino Complex Lemon Flavor
80/100
powder30 servings11 ingredients
564Thorne
Acetyl-L-Carnitine 500 mg
78/100
capsule60 servings1 ingredient
565Thorne
Lysine 500 mg
78/100
capsule60 servings1 ingredient
566Davinci Laboratories
Liposomal L-Theanine Fruit Punch Flavor
80/100
liquid50 servings2 ingredients
567Davinci Laboratories
Amino 21
81/100
capsule90 servings21 ingredients
568Davinci Laboratories
Gluconic DMG Liquid 300 mg
80/100
liquid60 servings1 ingredient
569Nutrex Research
EAA + Apple Pear
50/100
powder30 servings7 ingredients
570Nutrex Research Black Series
Liquid Carnitine 3000 Orange Mango
51/100
liquid16 servings3 ingredients
571Jarrow Formulas
L-Carnitine 500 As L-Carnitine Tartrate
75/100
capsule50 servings1 ingredient
572NOW
L-Histidiine 600 mg
77/100
capsule60 servings1 ingredient
573NOW
NAC Pure Powder
80/100
powder188 servings1 ingredient
574Protocol For Life Balance
5-HTP (5-Hydroxytryptophan) 200 mg
90/100
capsule60 servings6 ingredients
575Protocol For Life Balance
L-Theanine 200 mg
77/100
capsule60 servings2 ingredients
576Protocol For Life Balance
NAC N-Acetyl-Cysteine 1000 mg
77/100
tablet120 servings1 ingredient
577XTEND
Sport Strawberry Kiwi Splash
35/100
powder30 servings10 ingredients
578Nutrex Research
EAA + Hydration Maui Twist
50/100
powder30 servings7 ingredients
579XTEND
The Original Lemon-Lime Squeeze
38/100
powder30 servings11 ingredients
580XTEND
The Original Freedom Ice
39/100
powder30 servings11 ingredients
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 775 amino acids products, L-Carnitine 1000 mg ranks #1 with a SupplementScore of 74/100. 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.