Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
3401
Vitamin World
Maximum Strength L-Arginine 1000 mg
71/100
tablet30 servings1 ingredient
3402
Vitamin World
Maximum Strength L-Taurine 1000 mg
71/100
tablet30 servings1 ingredient
3403Doctor's Best
Best Acetyl-L-Carnitine HCl Featuring Sigma Tau Carnitine
71/100
capsule120 servings1 ingredient
3404Natrol
5-HTP TR Time Release 100 mg
71/100
tablet30 servings1 ingredient
3405Natrol
5-HTP 200 mg TR Time Release
71/100
tablet30 servings1 ingredient
3406NOW Sports
L-Glutamine 1000 mg
71/100
capsule30 servings1 ingredient
3407Protocol For Life Balance
L-Glutamine 1000 mg
71/100
capsule24 servings1 ingredient
3408Michael's Naturopathic Programs
Arginine Citrulline
71/100
tablet15 servings3 ingredients
3409Michael's Naturopathic Programs
Arginine Complex
71/100
tablet30 servings3 ingredients
3410
Ortho Molecular Products
N-Acetyl Cysteine
71/100
capsule60 servings1 ingredient
3411
EP
Sustained Release L-Arginine 350 mg
71/100
tablet30 servings1 ingredient
3412
Endurance Products Company
L-Arginine 350 mg
71/100
tablet133 servings1 ingredient
3413
Spring Valley
L-Glutamine
71/100
capsule30 servings1 ingredient
3414Swanson Ultra
Pharmaceutical Grade AjiPure L-Arginine 1,000 mg
71/100
tablet30 servings1 ingredient
3415
Dymatize
Liquid L-Carnitine Berry
71/100
liquid32 servings2 ingredients
3416Thorne
5-Hydroxytryptophan
71/100
capsule45 servings2 ingredients
3417
Dymatize
Liquid L-Carnitine Orange
71/100
liquid32 servings2 ingredients
3418Allergy Research Group
NAC N-Acetyl-L-Cysteine
71/100
tablet120 servings1 ingredient
3419
Swanson Ultra
Enteric Coated 5-HTP Extra Strength 100 mg
71/100
tablet30 servings1 ingredient
3420
Dymatize Nutrition
BCAA Complex 2200
71/100
tablet50 servings6 ingredients
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, Maximum Strength L-Arginine 1000 mg ranks #1 with a SupplementScore of 71/100. 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.