BioStacks
DaVinci Laboratories

Amino 21

1 Capsule · 90 servings · $0.37/serving

iHerbAmazon

Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.

Ingredients (21)

Glutamic Acid

45%

Dose

225 mg

Target

500–2000 mg

Form

—

L-Methionine

11%

Dose

22.5 mg

Target

200–1000 mg

Form

—

L-Taurine

8%

Dose

75 mg

Target

1000–3000 mg

Form

—

Tyrosine

6%

Dose

30 mg

Target

500–2000 mg

Form

—

DL-Phenylalanine

6%

Dose

30 mg

Target

500–1500 mg

Form

—

Other Ingredients (1)

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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