BlueBonnet L-Phenylalanine 500 mg supplement bottle
BlueBonnet

L-Phenylalanine 500 mg Review

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 6 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
98
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
L-Phenylalanine 500 mg †
Bioavailability Excellent

Absorption Rating

  • L-Phenylalanine Good
Other Ingredients Excellent

Fillers & Additives

  • Kosher Vegetable Capsules
  • Vegetable Magnesium Stearate
  • Silica
Efficacy Excellent

Dosage Analysis

  • L-Phenylalanine 500 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Phenylalanine 500 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Kosher Vegetable Capsules Safe

It provides a vegetarian and kosher-friendly encapsulation option.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
BlueBonnet

Founded 1991 · Sugar Land, Texas, United States · 734 products · bluebonnetnutrition.com/

Certifications

6 certifications
Non Gmo Project Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source
IGEN Non-GMO Tested Verified
NSF Certified Verified

Transparency

5 claims
Third Party Testing Claim — Claimed Unverifiable Source
Testing Lab Disclosure — Claimed
In House Testing — Claimed Unverifiable Source
Contains Proprietary Blend — True

Violation History

8 incidents
Recall EarthSweet® Chewable Cellular Active® Methylfolate 1000 mcgUnknownSource
Prop 65 Lead2016-08-29Source
Lawsuit Allegedly falsely promoting liquid vitamin B supplements as containing various amounts of B vitamins when they did not.2016Source
Lawsuit Falsely promoting its liquid vitamin B supplements as containing different amounts of B vitamins than they actually did.2016Source
Prop 65 Lead2015-12-16Source
Lawsuit Allegedly falsely advertised a Betaine supplement as 'derived from beets' when it was claimed to be synthetic.2014Source
Lawsuit Deceptively marketing Bluebonnet Chelated Magnesium by not listing magnesium oxide as an ingredient.2014Source
Lawsuit Falsely advertising a Betaine supplement as 'derived from beets' when it was allegedly created synthetically.2014Source
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Frequently Asked Questions
Is BlueBonnet L-Phenylalanine 500 mg a good supplement?

BlueBonnet L-Phenylalanine 500 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 All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, BlueBonnet, holds a brand trust score of 98/100 with 6 verified certifications including Non Gmo Project, Nsf Gmp, Usda Organic, Fda Gmp Inspections.

What are the ingredients in BlueBonnet L-Phenylalanine 500 mg?

BlueBonnet L-Phenylalanine 500 mg contains 1 active ingredients: L-Phenylalanine (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is BlueBonnet L-Phenylalanine 500 mg safe to take?

BlueBonnet L-Phenylalanine 500 mg has been analyzed for ingredient safety across all its components. All 3 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 BlueBonnet a trustworthy supplement brand?

BlueBonnet receives a brand trust score of 98/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Sugar Land, Texas, United States, the company offers 734 products in their lineup. They hold 6 verified certifications including Non Gmo Project, Nsf Gmp, Usda Organic, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: BlueBonnet has 8 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.