Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
361NOW
Double Strength Taurine
77/100
capsule30 servings1 ingredient
362NOW
L-Tyrosine 750 mg
77/100
capsule30 servings1 ingredient
363NOW
L-Histidiine 600 mg
77/100
capsule60 servings1 ingredient
364Protocol For Life Balance
L-Theanine 200 mg
77/100
capsule60 servings2 ingredients
365Protocol For Life Balance
NAC N-Acetyl-Cysteine 1000 mg
77/100
tablet120 servings1 ingredient
366Jarrow Formulas
SAM-e 400 mg
77/100
tablet30 servings1 ingredient
367Evlution Nutrition
L-Citrulline2000
77/100
capsule30 servings1 ingredient
368NOW Sports
Double Strength L-Arginine 1000 mg
77/100
tablet60 servings1 ingredient
369Swanson
L-Lysine 500 mg
77/100
capsule30 servings1 ingredient
370Swanson
Glutamic Acid 500 mg
77/100
capsule60 servings1 ingredient
371Swanson
Inosine
77/100
capsule60 servings1 ingredient
372Swanson
L-Ornithine 500 mg
77/100
capsule30 servings1 ingredient
373Swanson
Taurine 500 mg
77/100
capsule100 servings1 ingredient
374ON Optimum Nutrition
BCAA 1000
77/100
capsule100 servings3 ingredients
375Protocol For Life Balance
GABA 750 mg
77/100
capsule120 servings1 ingredient
376Doctor's Best
Acetyl-L-Carnitine 500 mg
77/100
capsule60 servings1 ingredient
377Solaray
DLPA DL-Phenylalanine 500 mg
77/100
capsule60 servings1 ingredient
378Solaray
Acetyl L-Carnitine 500 mg
77/100
capsule30 servings1 ingredient
379Solaray
L-Tyrosine 500 mg
77/100
capsule50 servings1 ingredient
380NOW Sports
L-Citrulline 1200 mg Extra Strength
77/100
tablet30 servings1 ingredient
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 775 amino acids products, Double Strength Taurine ranks #1 with a SupplementScore of 77/100. 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.