Amino 21™, 90 Capsules

Name: Amino 21™, 90 Capsules
Brand: DaVinci Laboratories
Rating: 3.6 (1 reviews)

What We Researched

21 active ingredients analyzed · 1 inactive ingredient decoded · 3 brand certifications checked · 2 retailers compared · Last updated: Mar 2026

Product Score Fair

Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Glutamic Acid	225 mg	*
L-Glutamine	75 mg	*
L-Taurine	75 mg	*
L-Aspartic Acid	45 mg	*
L-Glycine	45 mg	*
L-Lysine HCl	30 mg	*
DL-Phenylalanine	30 mg	*
Tyrosine	30 mg	*
L-Arginine	22.5 mg	*
L-Cystine	22.5 mg	*
L-Leucine	22.5 mg	*
L-Methionine	22.5 mg	*
L-Alanine	15 mg	*
L-Serine	15 mg	*
L-Threonine	15 mg	*
L-Citrulline	15 mg	*
L-Valine	15 mg	*
L-Histidine HCl	7.5 mg	*
L-Isoleucine	7.5 mg	*
L-Ornithine HCl	7.5 mg	*
L-Proline	7.5 mg	*

Bioavailability Excellent

Absorption Rating

Glutamic Acid Fair
L-Glutamine Good
L-Taurine Good
L-Aspartic Acid Good
L-Glycine Good
L-Lysine HCl Good
DL-Phenylalanine Good
Tyrosine Good
L-Arginine Good
L-Cystine Fair
L-Leucine Good
L-Methionine Good
L-Alanine Good
L-Serine Good
L-Threonine Good
L-Citrulline Good
L-Valine Good
L-Histidine HCl Good
L-Isoleucine Good
L-Ornithine HCl Good
L-Proline Good

Other Ingredients Excellent

Fillers & Additives

Gelatin

Efficacy Very Poor

Dosage Analysis

Glutamic Acid 225 mg Under-dosed
L-Glutamine 75 mg Under-dosed
L-Taurine 75 mg Under-dosed
L-Aspartic Acid 45 mg Under-dosed
L-Glycine 45 mg Under-dosed
L-Lysine HCl 30 mg Under-dosed
DL-Phenylalanine 30 mg Under-dosed
Tyrosine 30 mg Under-dosed
L-Arginine 22.5 mg Under-dosed
L-Leucine 22.5 mg Under-dosed
L-Methionine 22.5 mg Under-dosed
L-Serine 15 mg Under-dosed
L-Citrulline 15 mg Under-dosed
L-Valine 15 mg Under-dosed
L-Histidine HCl 7.5 mg Under-dosed
L-Isoleucine 7.5 mg Under-dosed
L-Ornithine HCl 7.5 mg Under-dosed
L-Proline 7.5 mg Under-dosed

Supplement Facts

Ingredient	Amount	% Daily Value
Glutamic Acid	225 mg	*
L-Glutamine	75 mg	*
L-Taurine	75 mg	*
L-Aspartic Acid	45 mg	*
L-Glycine	45 mg	*
L-Lysine HCl	30 mg	*
DL-Phenylalanine	30 mg	*
Tyrosine	30 mg	*
L-Arginine	22.5 mg	*
L-Cystine	22.5 mg	*
L-Leucine	22.5 mg	*
L-Methionine	22.5 mg	*
L-Alanine	15 mg	*
L-Serine	15 mg	*
L-Threonine	15 mg	*
L-Citrulline	15 mg	*
L-Valine	15 mg	*
L-Histidine HCl	7.5 mg	*
L-Isoleucine	7.5 mg	*
L-Ornithine HCl	7.5 mg	*
L-Proline	7.5 mg	*

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Price Comparison

Vitacost $36.00 $0.40 / serving

Best Price

Price History

Tracked across major retailers. Updated periodically.

Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report

Certifications

3 certifications

Consumerlab Verified Source

Fda Gmp Inspections Verified Source

Nsf Gmp Verified Source

Transparency

3 claims

Third Party Testing Claim — Verified Source

In House Testing — Verified Source

Violation History

2 incidents

Recall Amyloid Complete2024-05-08Source

Recall Dim Plex2019-07-11Source

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Frequently Asked Questions

Is DaVinci Laboratories Amino 21™, 90 Capsules a good supplement?

DaVinci Laboratories Amino 21™, 90 Capsules received a product quality score of 73/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 21 active ingredients with 90 servings per container. All 1 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, DaVinci Laboratories, holds a brand trust score of 82/100 with 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in DaVinci Laboratories Amino 21™, 90 Capsules?

DaVinci Laboratories Amino 21™, 90 Capsules contains 21 active ingredients: Glutamic Acid (225 mg), L-Glutamine (75 mg), L-Taurine (75 mg), L-Aspartic Acid (45 mg), L-Glycine (45 mg), L-Lysine HCl (30 mg), and 15 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is DaVinci Laboratories Amino 21™, 90 Capsules safe to take?

DaVinci Laboratories Amino 21™, 90 Capsules has been analyzed for ingredient safety across all its components. All 1 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is DaVinci Laboratories a trustworthy supplement brand?

DaVinci Laboratories receives a brand trust score of 82/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1973 and headquartered in Williston, VT, US, the company offers 192 products in their lineup. They hold 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: DaVinci Laboratories has 2 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.