Kirkland Signature Whey Protein (Creamy Chocolate supplement bottle
Kirkland Signature

Whey Protein (Creamy Chocolate Review

What We Researched
7 active ingredients analyzed · 13 inactive ingredients decoded · 4 brand certifications checked · Last updated: Aug 2026
78
Product Score Fair
80
Brand Score Good

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
BCAAs 5.6 g
Calcium 130 mg
Iron 1.1 mg
Potassium 260 mg
Bioavailability Very Good

Absorption Rating

  • BCAAs Good
  • Calcium Good
  • Iron Fair
  • Potassium Good
Other Ingredients Excellent

Fillers & Additives

  • Acesulfame Potassium
  • Sucralose
  • Alkalized Cocoa
  • Organic Gum Acacia
  • Sunflower Oil
  • Sunflower Lecithin
  • Natural Flavors
  • Rice Maltodextrin
  • Rosemary Extract
  • Oat Fiber
  • Sea Salt
  • Guar Gum
  • Xanthan Gum
Efficacy Poor

Dosage Analysis

  • BCAAs 5.6 g Effective
  • Calcium 130 mg Under-dosed
  • Iron 1.1 mg Under-dosed
  • Potassium 260 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
BCAAs 5.6 g
Dietary Fiber 1 g
Sodium 170 mg
Protein 25 g
Calcium 130 mg
Iron 1.1 mg
Potassium 260 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Acesulfame Potassium Generally_safe

It is used to provide sweetness without adding calories.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Alkalized Cocoa Unknown
Organic Gum Acacia Generally_safe

It is used to thicken liquids, emulsify mixtures, and stabilize formulations.

Sunflower Oil Safe

Helps dissolve and absorb fat-soluble vitamins.

Sunflower Lecithin Safe

Helps mix oil and water-based ingredients. Allergen-free alternative to soy lecithin.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Rice Maltodextrin Generally_safe

It is used as a filler or binder.

Rosemary Extract Safe

Prevents oxidation and extends shelf life naturally.

Oat Fiber Generally_safe

It is used as a filler or source of fiber.

Sea Salt Safe

It is used as a flavoring agent.

Guar Gum Safe

Thickens and provides fiber in supplement formulations.

Xanthan Gum Safe

Thickens and stabilizes liquid and semi-solid supplements.

Brand Trust Report
Kirkland Signature

Founded 1995 · Issaquah, Washington, United States · 56 products · costco.com/kirkland-signature.html

Certifications

4 certifications
Usp Verified Verified Source
Informed Choice Verified
USDA Organic Verified
Gluten-Free Certified Verified

Transparency

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

Violation History

3 incidents
Lawsuit Falsely advertising rotisserie chicken as containing 'no preservatives'2026Source
Recall Kirkland Signature B100 Complex Timed Release2025-03-31Source
Recall Kirkland Signature Severe Cold and Flu Plus Congestion2024-11-30Source
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Frequently Asked Questions
Is Kirkland Signature Whey Protein (Creamy Chocolate a good supplement?

Kirkland Signature Whey Protein (Creamy Chocolate received a product quality score of 78/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 7 active ingredients with 70 servings per container. Of the 13 inactive ingredients, 7 are rated safe and 0 are flagged for review. The manufacturer, Kirkland Signature, holds a brand trust score of 80/100 with 4 verified certifications including Usp Verified, Informed Choice, USDA Organic, Gluten-Free Certified.

What are the ingredients in Kirkland Signature Whey Protein (Creamy Chocolate?

Kirkland Signature Whey Protein (Creamy Chocolate contains 7 active ingredients: BCAAs (5.6 g), Dietary Fiber (1 g), Sodium (170 mg), Protein (25 g), Calcium (130 mg), Iron (1.1 mg), and 1 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Kirkland Signature Whey Protein (Creamy Chocolate safe to take?

Kirkland Signature Whey Protein (Creamy Chocolate has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Kirkland Signature a trustworthy supplement brand?

Kirkland Signature receives a brand trust score of 80/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1995 and headquartered in Issaquah, Washington, United States, the company offers 56 products in their lineup. They hold 4 verified certifications including Usp Verified, Informed Choice, USDA Organic, Gluten-Free Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Kirkland Signature has 3 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.