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Klean Athlete Klean Casein Natural Vanilla Custard Flavor supplement bottle
Klean Athlete

Klean Casein Natural Vanilla Custard Flavor Review

What We Researched
· 6 inactive ingredients decoded · 6 brand certifications checked · Page generated: Sep 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 Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Excellent

Fillers & Additives

  • Micellar Casein
  • Natural Flavors
  • Salt
  • Xanthan Gum
  • Stevia Leaf Extract
  • Monk Fruit Extract
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Micellar Casein Generally_safe

It is used as a source of protein.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Salt Safe

It is used as a flavoring agent.

Xanthan Gum Safe

Thickens and stabilizes liquid and semi-solid supplements.

Stevia Leaf Extract Safe

Provides sweetness without calories or blood sugar impact.

Monk Fruit Extract Safe

Provides sweetness without calories or blood sugar impact.

Brand Trust Report
Klean Athlete

Founded 2012 · Pittsburgh, Pennsylvania, United States · 15 products · kleanathlete.com/

Certifications

6 certifications
Nsf Certified For Sport Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Nsf Gmp Source available Primary evidence
NSF Certified for Sport Supporting evidence unavailable
NSF Contents Certified Supporting evidence unavailable
NSF Certified Supporting evidence unavailable

Transparency

3 claims
Third Party Testing Claim — Verified Evidence available Evidence
Testing Lab Disclosure — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
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Frequently Asked Questions
Is Klean Athlete Klean Casein Natural Vanilla Custard Flavor a good supplement?

Klean Athlete Klean Casein Natural Vanilla Custard Flavor received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. with 20 servings per container. All 6 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Klean Athlete, holds a brand trust score of 98/100.

Is Klean Athlete Klean Casein Natural Vanilla Custard Flavor safe to take?

GoodSupp reviewed the inactive-ingredient data available for Klean Athlete Klean Casein Natural Vanilla Custard Flavor. All 6 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. 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 Klean Athlete a trustworthy supplement brand?

Klean Athlete receives a brand trust score of 98/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2012 and headquartered in Pittsburgh, Pennsylvania, United States, the company offers 15 products in their lineup.

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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.