GNC GNC Pro Weight Gainer supplement bottle
GNC

GNC Pro Weight Gainer

What We Researched
· 8 inactive ingredients decoded · 5 brand certifications checked · Last updated: Mar 2026
70
Product Score Fair
88
Brand Score Good

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

  • Maltodextrin
  • Polydextrose
  • Natural and Artificial Flavors
  • D-Ribose
  • MCT (Medium Chain Triglycerides)
  • Sucralose
  • Soy Lecithin
  • Silicon Dioxide
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Polydextrose Generally_safe

It is used as a filler, to add bulk, and as a prebiotic fiber.

Natural and Artificial Flavors Generally_safe

It is used to improve the taste of the product.

D-Ribose Unknown
MCT (Medium Chain Triglycerides) Unknown
Sucralose Generally_safe

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

Soy Lecithin Safe

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

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Brand Trust Report
GNC

Founded 1935 · Pittsburgh, Pennsylvania, USA · 200 products · gnc.com

Certifications

5 certifications
Informed Sport Verified Source
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Claimed
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Frequently Asked Questions
Is GNC GNC Pro Weight Gainer a good supplement?

GNC GNC Pro Weight Gainer received a product quality score of 70/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. Of the 8 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, GNC, holds a brand trust score of 88/100 with 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic.

Is GNC GNC Pro Weight Gainer safe to take?

GNC GNC Pro Weight Gainer 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 GNC a trustworthy supplement brand?

GNC receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 200 products in their lineup. They hold 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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.