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

649Relax-a-Saurus Grape65/100KAL DinosaursRelax-a-Saurus Grapechewable · 30 servings · $0.42/servingBuy on iHerb · $12.56
650GABA Calm Orange Flavor65/100Source Naturals Serene ScienceGABA Calm Orange Flavorlozenge · 120 servings · $0.16/servingBuy on iHerb · $19.25
651L-Theanine 200 mg65/100Source Naturals Serene ScienceL-Theanine 200 mgtablet · 60 servings · $0.42/servingBuy on iHerb · $25.19
652L-Carnosine 500 mg65/100Source NaturalsL-Carnosine 500 mgtablet · 60 servings · $0.48/servingBuy on iHerb · $28.69
653L-Lysine 1000 mg65/10021st CenturyL-Lysine 1000 mgtablet · 90 servings · $0.08/servingBuy on iHerb · $6.99
654Theanine XR Stress Relief65/100Life ExtensionTheanine XR Stress Relieftablet · 30 servings · $0.70/servingBuy on iHerb · $21.00
655Chewbale GABA65/100NOWChewbale GABAchewable · 45 servings · $0.33/servingBuy on iHerb · $14.69
656Maximum Strength Daily Amino Acid64/10021st CenturyMaximum Strength Daily Amino Acidtablet · 120 servings · $0.08/servingBuy on iHerb · $9.99
657Acetyl L-Carnitine & Alpha-Lipoic Acid64/100Source NaturalsAcetyl L-Carnitine & Alpha-Lipoic Acidtablet · 30 servings · $1.58/servingBuy on iHerb · $47.34
658L-Carnosine 500 mg64/100KALL-Carnosine 500 mgtablet · 30 servings · $0.87/servingBuy on iHerb · $26.15
659L-Arginine 500 mg64/100Source NaturalsL-Arginine 500 mgcapsule · 50 servings · $0.19/servingBuy on iHerb · $9.74
660L-Proline L-Lysine 275 mg / 275 mg64/100Source NaturalsL-Proline L-Lysine 275 mg / 275 mgtablet · 30 servings · $0.53/servingBuy on iHerb · $15.78
661Suntheanine64/100Natural Factors Stress-RelaxSuntheaninetablet · 60 servings · $0.61/servingBuy on iHerb · $36.74
662L-Carnitine LS3 3000 Lemon Lime63/100iSatoriL-Carnitine LS3 3000 Lemon Limeliquid · 32 servings · $0.94/servingBuy on iHerb · $29.99
663L-Carnitine LS3 1500 Pink Lemonade63/100iSatoriL-Carnitine LS3 1500 Pink Lemonadeliquid · 32 servings · $0.69/servingBuy on iHerb · $21.99
664L-Carnitine LS3 3000 Gummy Bear63/100iSatoriL-Carnitine LS3 3000 Gummy Bearliquid · 32 servings · $0.94/servingBuy on iHerb · $29.99
665Pharma GABA Fast Acting 100 mg63/100Natural FactorsPharma GABA Fast Acting 100 mgtablet · 30 servings · $0.79/servingBuy on iHerb · $23.78
666Liquid L-Carnitine LS3 Pink Lemonade63/100iSatoriLiquid L-Carnitine LS3 Pink Lemonadeliquid · 31 servings · $0.71/servingBuy on iHerb · $21.99
667Suntheanine L-Theanine63/100Natural Factors Stress-RelaxSuntheanine L-Theaninetablet · 30 servings · $0.65/servingBuy on iHerb · $19.44
668Animal Juiced Aminos Grape Juiced62/100AnimalAnimal Juiced Aminos Grape Juicedpowder · 30 servings · $1.13/servingBuy on iHerb · $33.75
669Pharma GABA62/100Natural FactorsPharma GABAtablet · 30 servings · $0.79/servingBuy on iHerb · $23.78
670Double Potency 5-HTP Extra62/100Irwin NaturalsDouble Potency 5-HTP Extrasoftgel · 30 servings · $0.67/servingBuy on iHerb · $19.99
671L-Phenylalanine 500 mg62/100Source NaturalsL-Phenylalanine 500 mgtablet · 50 servings · $0.19/servingBuy on iHerb · $9.38
672L-Tyrosine 500 mg62/100Source NaturalsL-Tyrosine 500 mgtablet · 100 servings · $0.12/servingBuy on iHerb · $12.10

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.