Rule One Proteins Mass Gainer, Chocolate Fudge, 5.73 lbs (2.6 kg) supplement bottle
Rule One Proteins

Mass Gainer, Chocolate Fudge, 5.73 lbs (2.6 kg)

What We Researched
14 active ingredients analyzed · 10 inactive ingredients decoded · 2 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
82
Product Score Good
84
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium 360 mcg 28%
Iron 8 mg 44%
Potassium 1,240 mg 26%
Creatine Monohydrate 1 g
Bioavailability Very Good

Absorption Rating

  • Calcium Good
  • Iron Fair
  • Potassium Good
  • Creatine Monohydrate Good
Other Ingredients Excellent

Fillers & Additives

  • Carbohydrate blend (maltodextrin, organic rice bran, pea starch [Carb10® ])
  • Protein blend (whey protein concentrate, whey protein isolate, whey protein hydrolysate)
  • Cocoa (Processed with Alkali)
  • Natural and Artificial Flavors
  • Guar Gum
  • Sucralose
  • Acesulfame Potassium
  • Stevia Leaf Extract
  • Soy Lecithin
  • Sunflower Lecithin
Efficacy Fair

Dosage Analysis

  • Calcium 360 mcg Under-dosed
  • Iron 8 mg Effective
  • Potassium 1,240 mg Effective
  • Creatine Monohydrate 1 g Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 1,260
Total Fat 8 g 10%*
Saturated Fat 4 g 20%*
Cholesterol 160 mg 53%
Total Carbohydrate 254 g 92%*
Dietary Fiber 7 g 25%*
Total Sugars 14 g
Includes 10 g Added Sugars 20%*
Protein 40 g 80%*
Calcium 360 mcg 28%
Iron 8 mg 44%
Sodium 350 mg 15%
Potassium 1,240 mg 26%
Creatine Monohydrate 1 g

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Carbohydrate blend (maltodextrin, organic rice bran, pea starch [Carb10® ]) Unknown
Protein blend (whey protein concentrate, whey protein isolate, whey protein hydrolysate) Unknown
Cocoa (Processed with Alkali) Generally_safe

It is added to supplements to provide flavor and color.

Natural and Artificial Flavors Generally_safe

It is used to improve the taste of the product.

Guar Gum Safe

Thickens and provides fiber in supplement formulations.

Sucralose Generally_safe

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

Acesulfame Potassium Generally_safe

It is used to provide sweetness without adding calories.

Stevia Leaf Extract Safe

Provides sweetness without calories or blood sugar impact.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Sunflower Lecithin Safe

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

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$40$39$38$37$36 Mar 12 $37.90
iHerb

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

Brand Trust Report
Rule One Proteins

Founded 2014 · Aurora, IL, United States · 62 products · ruleoneproteins.com

Certifications

2 certifications
Informed Sport Verified Source
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

1 incident
Prop 65 Lead and Cadmium2019-01-07Source
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Frequently Asked Questions
Is Rule One Proteins Mass Gainer, Chocolate Fudge a good supplement?

Rule One Proteins Mass Gainer, Chocolate Fudge, 5.73 lbs (2.6 kg) received a product quality score of 82/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 14 active ingredients with 8 servings per container. Of the 10 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Rule One Proteins, holds a brand trust score of 84/100 with 2 verified certifications including Informed Sport, Nsf Gmp.

What are the ingredients in Rule One Proteins Mass Gainer, Chocolate Fudge?

Rule One Proteins Mass Gainer, Chocolate Fudge contains 14 active ingredients: Calories (1,260), Total Fat (8 g), Saturated Fat (4 g), Cholesterol (160 mg), Total Carbohydrate (254 g), Dietary Fiber (7 g), and 8 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Rule One Proteins Mass Gainer, Chocolate Fudge safe to take?

Rule One Proteins Mass Gainer, Chocolate Fudge, 5.73 lbs (2.6 kg) 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 Rule One Proteins a trustworthy supplement brand?

Rule One Proteins receives a brand trust score of 84/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2014 and headquartered in Aurora, IL, United States, the company offers 62 products in their lineup. They hold 2 verified certifications including Informed Sport, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Rule One Proteins has 1 historical regulatory incident 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.