Supplement Ratings

iHerb picks

Best Amino Acids on iHerb

Skip hours of label reading. Every pick below is sold on iHerb and passed our label check with 60+ points, so whatever you choose is worth taking, and you see today's price before you click.

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AllAmino AcidsAntioxidants & LongevityAshwagandha & AdaptogensB VitaminsBiotinBlood Sugar SupportBrain & NootropicsCalciumCollagenCoQ10CreatineDigestive HealthEye HealthGreens & SuperfoodsHeart HealthHerbs & BotanicalsHormone & Sexual HealthImmune SupportIronJoint SupportLiver & DetoxMagnesiumMelatonin & SleepMinerals & ElectrolytesMultivitaminsMushroomsOmega-3 & Fish OilPre-WorkoutProbioticsProtein SupplementsTurmeric & CurcuminUrinary HealthVitamin CVitamin DVitamins A, E & KWeight ManagementZinc
Top ratedBest value

Highest score first

121L-Lysine Amino Acid Powder80/100CarlsonL-Lysine Amino Acid Powderpowder · 83 servings · $0.10/servingBuy on iHerb · $8.42
122Acetyl L-Carnitine Amino Acid Powder80/100CarlsonAcetyl L-Carnitine Amino Acid Powderpowder · 83 servings · $0.34/servingBuy on iHerb · $28.48
123L-Glutamine Powder80/100CarlsonL-Glutamine Powderpowder · 33 servings · $0.46/servingBuy on iHerb · $15.22
124Glycine Amino Acid Powder80/100CarlsonGlycine Amino Acid Powderpowder · 50 servings · $0.21/servingBuy on iHerb · $10.63
125L-Lysine Powder80/100CarlsonL-Lysine Powderpowder · 83 servings · $0.10/servingBuy on iHerb · $8.42
126Gluconic DMG Liquid 300 mg80/100DaVinci Laboratories Of VermontGluconic DMG Liquid 300 mgliquid · 60 servings · $0.92/servingBuy on iHerb · $55.30
127Arginine Ornithine Powder80/100Life ExtensionArginine Ornithine Powderpowder · 48 servings · $0.38/servingBuy on iHerb · $18.00
128L-Glutamine Powder80/100Life ExtensionL-Glutamine Powderpowder · 50 servings · $0.44/servingBuy on iHerb · $22.00
129L-Taurine Powder80/100Life ExtensionL-Taurine Powderpowder · 382 servings · $0.04/servingBuy on iHerb · $15.00
130TMG Powder80/100Life ExtensionTMG Powderpowder · 97 servings · $0.11/servingBuy on iHerb · $10.50
131Branched Chain Amino Acids (Free Form)80/100Life ExtensionBranched Chain Amino Acids (Free Form)capsule · 22 servings · $0.68/servingBuy on iHerb · $15.00
132Glycine 1000 mg80/100Life ExtensionGlycine 1000 mgcapsule · 30 servings · $0.40/servingBuy on iHerb · $12.00
133TMG 500 mg80/100Life ExtensionTMG 500 mgcapsule · 30 servings · $0.34/servingBuy on iHerb · $10.13
134L-Lysine 620 mg80/100Life ExtensionL-Lysine 620 mgcapsule · 30 servings · $0.30/servingBuy on iHerb · $9.00
135N-Acetyl Cysteine 500 mg80/100DaVinci Laboratories Of VermontN-Acetyl Cysteine 500 mgcapsule · 90 servings · $0.32/servingBuy on iHerb · $28.40
136AAKG 250 g Unflavored80/100PrimaForceAAKG 250 g Unflavoredpowder · 125 servings · $0.16/servingBuy on iHerb · $19.99
137AAKG80/100NutraBioAAKGpowder · 142 servings · $0.26/servingBuy on iHerb · $36.99
138L-Theanine 200 mg80/100NutraBioL-Theanine 200 mgcapsule · 90 servings · $0.26/servingBuy on iHerb · $22.99
139Glutamine80/100ALLMAX NUTRITIONGlutaminepowder · 200 servings · $0.25/servingBuy on iHerb · $49.99
140Acetyl L-Carnitine Powder80/100CarlsonAcetyl L-Carnitine Powderpowder · 83 servings · $0.34/servingBuy on iHerb · $28.48
141Essential Amino Acids80/100Double Wood SupplementsEssential Amino Acidscapsule · 75 servings · $0.27/servingBuy on iHerb · $19.95
142L-Lysine Powder 960 mg80/100CarlsonL-Lysine Powder 960 mgpowder · 83 servings · $0.10/servingBuy on iHerb · $8.42
143Glycine Powder80/100CarlsonGlycine Powderpowder · 50 servings · $0.21/servingBuy on iHerb · $10.63
144GABA 1000 mg80/100Double Wood SupplementsGABA 1000 mgcapsule · 150 servings · $0.13/servingBuy on iHerb · $19.95

Scores rate what's on the label (dosage transparency, cleanliness, ingredient profile), not clinical results. Prices come from the iHerb catalog feed and can change at checkout. See the full Best Amino Acids ranking.