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

217L-Arginine+ L-Citrulline Unflavored80/100Evlution NutritionL-Arginine+ L-Citrulline Unflavoredpowder · 75 servings · $0.22/servingBuy on iHerb · $16.51
218BCAA Unflavored80/100ALLMAX ESSENTIALSBCAA Unflavoredpowder · 80 servings · $0.31/servingBuy on iHerb · $24.99
219Glutamine80/100ALLMAX ESSENTIALSGlutaminepowder · 80 servings · $0.40/servingBuy on iHerb · $31.99
220Taurine80/100ALLMAX ESSENTIALSTaurinepowder · 133 servings · $0.15/servingBuy on iHerb · $20.59
221Beta-Alanine Unflavored80/100Evlution NutritionBeta-Alanine Unflavoredpowder · 125 servings · $0.08/servingBuy on iHerb · $10.23
2225-HTP 100 mg80/100Protocol For Life Balance5-HTP 100 mgcapsule · 90 servings · $0.33/servingBuy on iHerb · $30.00
223Taurine Powder80/100Life ExtensionTaurine Powderpowder · 382 servings · $0.04/servingBuy on iHerb · $15.00
224TMG Powder (Trimethylglycine)80/100Life ExtensionTMG Powder (Trimethylglycine)powder · 97 servings · $0.11/servingBuy on iHerb · $10.50
225Nitro80/100Bluebonnet Intimate EssentialsNitrocapsule · 60 servings · $0.36/servingBuy on iHerb · $21.56
226Liposomal Acetyl L-Carnitine+80/100CodeageLiposomal Acetyl L-Carnitine+capsule · 90 servings · $0.39/servingBuy on iHerb · $34.99
227Liposomal L-Carnitine+80/100CodeageLiposomal L-Carnitine+capsule · 90 servings · $0.39/servingBuy on iHerb · $34.99
228L-Cysteine 500 mg80/100SolarayL-Cysteine 500 mgcapsule · 30 servings · $0.33/servingBuy on iHerb · $9.79
229L-Theanine With Green Tea 200 mg80/100SolarayL-Theanine With Green Tea 200 mgcapsule · 45 servings · $0.65/servingBuy on iHerb · $29.29
230Glutamine Decanate Unflavored80/100MuscleMedsGlutamine Decanate Unflavoredpowder · 60 servings · $0.34/servingBuy on iHerb · $20.46
231Platinum 100% Glutamine80/100MuscleTech Essential SeriesPlatinum 100% Glutaminepowder · 60 servings · $0.28/servingBuy on iHerb · $16.99
232Best L-Tyrosine 500 mg80/100Doctor's BestBest L-Tyrosine 500 mgcapsule · 120 servings · $0.12/servingBuy on iHerb · $14.99
233L-Arginine Powder80/100Doctor's BestL-Arginine Powderpowder · 50 servings · $0.38/servingBuy on iHerb · $18.99
234Taurine 1000 mg80/100Protocol For Life BalanceTaurine 1000 mgcapsule · 30 servings · $0.52/servingBuy on iHerb · $15.45
235100% Pure Glutamine80/100NutraBio100% Pure Glutaminepowder · 100 servings · $0.30/servingBuy on iHerb · $29.99
236100% Pure L-Citrulline80/100NutraBio100% Pure L-Citrullinepowder · 75 servings · $0.32/servingBuy on iHerb · $23.99
237Suntheanine L-Theanine 125 mg80/100Natural Factors Stress-RelaxSuntheanine L-Theanine 125 mgcapsule · 30 servings · $0.65/servingBuy on iHerb · $19.44
238Taurine Amino Acid Powder80/100CarlsonTaurine Amino Acid Powderpowder · 25 servings · $0.35/servingBuy on iHerb · $8.67
239BCAA 5000 Powder Unflavored80/100ON Optimum NutritionBCAA 5000 Powder Unflavoredpowder · 60 servings · $0.69/servingBuy on iHerb · $41.13
240TMG 1000 mg80/100Life ExtensionTMG 1000 mgcapsule · 30 servings · $0.34/servingBuy on iHerb · $10.13

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.