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.

  • Doses, fillers and hidden blends checked
  • Today's price and cost per serving
  • One click to order on iHerb

We may earn a commission when you buy through these links, at no extra cost to you. It never changes a score or a ranking. See how we score

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

193BCAAs 4:1:1 Ratio80/100BluebonnetBCAAs 4:1:1 Ratiocapsule · 30 servings · $1.13/servingBuy on iHerb · $34.00
194L-Carnitine80/100NOWL-Carnitinepowder · 44 servings · $0.50/servingBuy on iHerb · $22.04
195Micronized L-Glutamine 5000 mg80/100Natural FactorsMicronized L-Glutamine 5000 mgpowder · 45 servings · $0.40/servingBuy on iHerb · $17.99
196Amino Complex Lemon Flavor80/100Thorne ResearchAmino Complex Lemon Flavorpowder · 30 servings · $1.73/servingBuy on iHerb · $52.00
197Liposomal L-Theanine Fruit Punch Flavor80/100Davinci LaboratoriesLiposomal L-Theanine Fruit Punch Flavorliquid · 50 servings · $1.60/servingBuy on iHerb · $80.20
198Gluconic DMG Liquid 300 mg80/100Davinci LaboratoriesGluconic DMG Liquid 300 mgliquid · 60 servings · $0.92/servingBuy on iHerb · $55.30
199NAC Pure Powder80/100NOWNAC Pure Powderpowder · 188 servings · $0.10/servingBuy on iHerb · $18.36
200Arginine HCl80/100ALLMAX ESSENTIALSArginine HClpowder · 80 servings · $0.35/servingBuy on iHerb · $27.74
201Beta-Alanine80/100ALLMAX ESSENTIALSBeta-Alaninepowder · 125 servings · $0.26/servingBuy on iHerb · $32.37
202BCAA 80/100California Gold Nutrition SPORTBCAA powder · 91 servings · $0.28/servingBuy on iHerb · $25.43
203BCAA 5000 Unflavored80/100Evlution NutritionBCAA 5000 Unflavoredpowder · 60 servings · $0.25/servingBuy on iHerb · $15.01
204Agmatine 750 Unflavored80/100Evlution NutritionAgmatine 750 Unflavoredpowder · 100 servings · $0.05/servingBuy on iHerb · $4.97
205Glutamine5000 Unflavored80/100Evlution NutritionGlutamine5000 Unflavoredpowder · 60 servings · $0.26/servingBuy on iHerb · $15.49
206L-Citrulline2000 2000 mg Unflavored80/100Evlution NutritionL-Citrulline2000 2000 mg Unflavoredpowder · 100 servings · $0.16/servingBuy on iHerb · $15.89
207L-Citrulline Powder80/100Doctor's BestL-Citrulline Powderpowder · 66 servings · $0.33/servingBuy on iHerb · $21.99
208L-Tryptophan 500 mg80/100Doctor's BestL-Tryptophan 500 mgcapsule · 90 servings · $0.22/servingBuy on iHerb · $19.99
209L-Tyrosine 500 mg80/100Doctor's BestL-Tyrosine 500 mgcapsule · 120 servings · $0.12/servingBuy on iHerb · $14.99
210N-Acetyl Cysteine 500 mg80/100Davinci LaboratoriesN-Acetyl Cysteine 500 mgcapsule · 90 servings · $0.32/servingBuy on iHerb · $28.40
211Agmatine 1 g Unflavored80/100NutricostAgmatine 1 g Unflavoredpowder · 100 servings · $0.15/servingBuy on iHerb · $14.95
212L-Carnosine 500 mg Unflavored80/100NutricostL-Carnosine 500 mg Unflavoredpowder · 100 servings · $0.31/servingBuy on iHerb · $30.72
213Suntheanine L-Theanine 100 mg80/100SwansonSuntheanine L-Theanine 100 mgcapsule · 60 servings · $0.30/servingBuy on iHerb · $18.14
214GABA Pure Powder80/100NOWGABA Pure Powderpowder · 340 servings · $0.04/servingBuy on iHerb · $12.24
215Taurine 325 mg80/100KirkmanTaurine 325 mgcapsule · 250 servings · $0.17/servingBuy on iHerb · $42.23
216NAC 600 mg80/100Emerald LabsNAC 600 mgcapsule · 60 servings · $0.34/servingBuy on iHerb · $20.66

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.