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

433L-Lysine 500 mg75/100California Gold NutritionL-Lysine 500 mgcapsule · 60 servings · $0.10/servingBuy on iHerb · $6.30
434L-Taurine 1000 mg75/100California Gold NutritionL-Taurine 1000 mgcapsule · 60 servings · $0.16/servingBuy on iHerb · $9.70
435Amino Day75/100Source NaturalsAmino Daytablet · 40 servings · $0.58/servingBuy on iHerb · $23.32
436L-Glutamine 500 mg75/100Source NaturalsL-Glutamine 500 mgcapsule · 100 servings · $0.11/servingBuy on iHerb · $11.04
437L-Leucine 500 mg75/100Source NaturalsL-Leucine 500 mgcapsule · 80 servings · $0.36/servingBuy on iHerb · $28.86
438Taurine 100075/100Source NaturalsTaurine 1000capsule · 120 servings · $0.09/servingBuy on iHerb · $11.04
439SAMe 400 mg75/100Source NaturalsSAMe 400 mgtablet · 30 servings · $1.80/servingBuy on iHerb · $53.98
440Taurine, 1,000 mg75/100Source NaturalsTaurine, 1,000 mgcapsule · 240 servings · $0.09/servingBuy on iHerb · $21.09
441L-Carnitine 500 As L-Carnitine Tartrate75/100Jarrow FormulasL-Carnitine 500 As L-Carnitine Tartratecapsule · 50 servings · $0.46/servingBuy on iHerb · $22.93
442Glycine75/100Source NaturalsGlycinecapsule · 50 servings · $0.18/servingBuy on iHerb · $8.97
443BCAA 500 mg75/100California Gold NutritionBCAA 500 mgcapsule · 60 servings · $0.14/servingBuy on iHerb · $8.26
444L-Arginine150075/100Evlution NutritionL-Arginine1500capsule · 50 servings · $0.22/servingBuy on iHerb · $10.95
4455-HTP 200 mg75/100Nature's Truth5-HTP 200 mgcapsule · 25 servings · $0.38/servingBuy on iHerb · $9.57
446GABA 750 mg75/100Nature's TruthGABA 750 mgcapsule · 60 servings · $0.17/servingBuy on iHerb · $10.17
447L-Theanine 200 mg75/100Nature's TruthL-Theanine 200 mgcapsule · 60 servings · $0.18/servingBuy on iHerb · $10.68
448L-Arginine 500 mg & L-Citrulline 250 mg75/100NutricostL-Arginine 500 mg & L-Citrulline 250 mgcapsule · 120 servings · $0.11/servingBuy on iHerb · $13.34
449L-Cysteine 500 mg75/100Lake Avenue NutritionL-Cysteine 500 mgcapsule · 90 servings · $0.15/servingBuy on iHerb · $13.69
450GABA L-Theanine Stress B Lozenge Mango Tangerine75/100KALGABA L-Theanine Stress B Lozenge Mango Tangerinelozenge · 50 servings · $0.27/servingBuy on iHerb · $13.59
451NAC 600 mg75/100ALLMAX ESSENTIALSNAC 600 mgcapsule · 60 servings · $0.27/servingBuy on iHerb · $16.49
452Caffeine 100 mg with L-Theanine 100 mg75/100NutricostCaffeine 100 mg with L-Theanine 100 mgcapsule · 240 servings · $0.06/servingBuy on iHerb · $13.95
453L-Tyrosine 1000 mg75/100Natural FactorsL-Tyrosine 1000 mgcapsule · 30 servings · $0.24/servingBuy on iHerb · $7.18
454L-Lysine 1000 mg Free Form75/100SolgarL-Lysine 1000 mg Free Formtablet · 30 servings · $0.37/servingBuy on iHerb · $11.19
455Acetyl L-Carnitine75/100Vital NutrientsAcetyl L-Carnitinecapsule · 60 servings · $0.60/servingBuy on iHerb · $35.99
456L-Citrulline75/100Source NaturalsL-Citrullinecapsule · 30 servings · $0.73/servingBuy on iHerb · $22.05

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.