Category
Amino Acids
L-theanine, L-carnitine, BCAA, NAC and other amino acids
3501
Nutricost
NAC 1,200 mg Unflavored
80/100
powder208 servings1 ingredient
3502
Douglas Laboratories
L-Glutamine + FOS Powder
69/100
powder62 servings3 ingredients
3503Nature's Truth
5-HTP 200 mg
75/100
capsule25 servings1 ingredient
3504Nature's Truth
GABA 750 mg
75/100
capsule60 servings1 ingredient
3505
Nature's Truth
L-Lysine 500 mg
72/100
tablet130 servings1 ingredient
3506Nature's Truth
L-Theanine 200 mg
75/100
capsule60 servings1 ingredient
3507Nature's Truth
Mega Strength L-Arginine 500 mg
72/100
capsule50 servings1 ingredient
3508Nature's Truth
Maximum Strength L-Arginine HCl 1,000 mg
72/100
tablet50 servings1 ingredient
3509Nature's Truth
Mega Strength L-Carnitine 1,000 mg
72/100
capsule30 servings1 ingredient
3510
Nature's Truth
NAC 1,200 mg
72/100
tablet30 servings1 ingredient
3511Nature's Truth
Super Strength Acetyl L-Carnitine HCl 1,000 mg
72/100
capsule30 servings1 ingredient
3512
Beyond Health
Acetyl L-Carnitine 500 mg
78/100
capsule100 servings1 ingredient
3513
Beyond Health
Natural Amino hGH
70/100
capsule15 servings2 ingredients
3514
Absorb Health
N-Acetyl Cysteine 600 mg
77/100
capsule100 servings1 ingredient
3515
Absorb Health
Phenibut
80/100
capsule30 servings1 ingredient
3516
InfoWars M.D
Nitric Boost
74/100
capsule30 servings7 ingredients
3517
Adaptogen Research
L-Glutamine
80/100
powder60 servings1 ingredient
3518
Axe & Sledge Supplements
The Grind Tropical Thunder
46/100
powder30 servings7 ingredients
3519
Kion
Aminos
83/100
capsule30 servings9 ingredients
3520
ANS
Post BCAA Grape
44/100
powder30 servings3 ingredients
Frequently Asked Questions
What is the best amino acids supplement?
Based on our analysis of 5,071 amino acids products, NAC 1,200 mg Unflavored ranks #1 with a SupplementScore of 80/100. 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.