GNC Herbal Plus Grape Seed Extract 500 mg supplement bottle
GNC Herbal Plus

Grape Seed Extract 500 mg

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 2 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
75
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Grape seed extract (as Polyphenols) 500 mg †
Bioavailability Excellent

Absorption Rating

  • Grape seed extract (as Polyphenols) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Cellulose Capsule
  • Microcrystalline Cellulose
  • Hydroxypropylcellulose
  • Stearic Acid
  • Magnesium Stearate
Efficacy Excellent

Dosage Analysis

  • Grape seed extract (as Polyphenols) 500 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Grape seed extract (as Polyphenols) 500 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable Cellulose Capsule Safe

Vegetarian/vegan capsule shell.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hydroxypropylcellulose Generally_safe

It is added to bind ingredients together and provide a smooth coating.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

GNC $44.99
Best Price

Price History

Tracked across major retailers. Updated periodically.

$47$46$45$44$43 Mar 12 $44.99
GNC

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

Brand Trust Report
GNC Herbal Plus

Founded 1935 · Pittsburgh, Pennsylvania, U.S. · 117 products · gnc.com/

Certifications

2 certifications
Informed Sport Verified Source
Nsf Certified For Sport Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Claimed Source

Violation History

4 incidents
Recall GNC Women's 30+ Vitapak2025-06-13Source
Lawsuit Mislabeled magnesium content in 'Super Magnesium' supplements.2024Source
Lawsuit Selling Vitamin E Skin Oil that was mostly vegetable oil.2020Source
Lawsuit Unfair discontinuation of the Gold Card discount program.2016Source
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Frequently Asked Questions
Is GNC Herbal Plus Grape Seed Extract 500 mg a good supplement?

GNC Herbal Plus Grape Seed Extract 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 Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, GNC Herbal Plus, holds a brand trust score of 75/100 with 2 verified certifications including Informed Sport, Nsf Certified For Sport.

What are the ingredients in GNC Herbal Plus Grape Seed Extract 500 mg?

GNC Herbal Plus Grape Seed Extract 500 mg contains 1 active ingredients: Grape seed extract (as Polyphenols) (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Herbal Plus Grape Seed Extract 500 mg safe to take?

GNC Herbal Plus Grape Seed Extract 500 mg 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 Herbal Plus a trustworthy supplement brand?

GNC Herbal Plus receives a brand trust score of 75/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, U.S., the company offers 117 products in their lineup. They hold 2 verified certifications including Informed Sport, Nsf Certified For Sport. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: GNC Herbal Plus has 4 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. 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.