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DaVinci Laboratories DL-Phenylalanine, 750 mg supplement bottle
DaVinci Laboratories

DL-Phenylalanine, 750 mg Review

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 4 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
93
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
DL-Phenylalanine 750 mg *
Bioavailability Excellent

Absorption Rating

  • DL-Phenylalanine Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Cellulose
  • Vegetable leucine
  • Silicon Dioxide
Efficacy Excellent

Dosage Analysis

  • DL-Phenylalanine 750 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
DL-Phenylalanine 750 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable Cellulose Safe

Forms a vegetarian capsule shell alternative to gelatin.

Vegetable leucine Unknown
Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Brand Trust Report
DaVinci Laboratories

Founded 1973 · Williston, VT, US · 368 products · davincilabs.com/

Certifications

4 certifications
Consumerlab Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Nsf Gmp Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency

5 claims
Third Party Testing Claim — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — True Brand claim; evidence unavailable
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

2 incidents
Recall Amyloid Complete2024-05-08 Source available Primary source
Recall Dim Plex2019-07-11 Source available Primary source
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Frequently Asked Questions
Is DaVinci Laboratories DL-Phenylalanine, 750 mg a good supplement?

DaVinci Laboratories DL-Phenylalanine, 750 mg received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 60 servings per container. Of the 3 inactive ingredients, 2 are rated safe and 0 ingredients are flagged for review. The manufacturer, DaVinci Laboratories, holds a brand trust score of 93/100.

What are the ingredients in DaVinci Laboratories DL-Phenylalanine, 750 mg?

DaVinci Laboratories DL-Phenylalanine, 750 mg contains 1 active ingredients: DL-Phenylalanine (750 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is DaVinci Laboratories DL-Phenylalanine, 750 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for DaVinci Laboratories DL-Phenylalanine, 750 mg. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. 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 93/100 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 368 products in their lineup. 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 — read our methodology. 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.