MegaNatural Grape Seed Extract to Carry NSF Certification Mark

Each ingredient meets the organization’s
stringent criteria for dietary supplements

Four MegaNatural Grape Extract products have received authorization to use the NSF Certification Marks, attesting to their consistent quality and excellence in manufacturing processes. The products -- MegaNatural® GSKE Grape Pomace Extract, MegaNatural® GSKE-40 Grape Pomace Extract, MegaNatural® Gold Grape Seed Extract and MegaNatural® Rubired Grape Juice Extract – are manufactured and marketed by Polyphenolics.

NSF International is a not-for-profit, non-governmental organization, and is the world leader in standards development, product certification, and risk management for public health and safety. NSF serves manufacturers operating in 80 countries, and the NSF mark is recognized for its value in international trade around the world, and is respected by regulatory agencies at the local, state and federal levels. NSF’s third-party testing provides a complete evaluation of every aspect of a product’s development. For dietary supplements such as MegaNatural, this evaluation includes:

  • Verifying manufacturing consistency and accuracy
  • Verifying the identity and quantity of the ingredients declared on the product label
  • Ensuring that the product does not contain undeclared ingredients or unacceptable levels of contaminants, and
  • Ensuring that the manufacturer is conforming with currently recommended industry good manufacturing practices.

About MegaNatural Grape Seed Extract Products

Many have heard reports claiming that red wine, Concord and Rubired grape juice, and high quality grape seed extracts are good for the heart. Phenols and tannins, which are found in red grapes, give these products their reported benefits. The key active phenols are called proanthocyanidins, a class of flavonoid phenols that are antioxidants more potent than vitamin C and E.

A high quality grape seed extract, such as MegaNatural® Gold grape seed extract, is a pure source of these compounds containing over 90 percent procyanidins. Two hundred mg. of grape seed extract will deliver the same level of procyanidins as a four-ounce glass of red wine without the alcohol present in wine. Also, a six-ounce glass of red grape juice will have about 200 mg of procyanidins but also 130 calories and 30 grams of sugar.

Scientists continue to make new discoveries about the health benefits of these compounds. For example, damage to blood fat (the “bad” LDL cholesterol) due to oxidation may lead to cardiovascular disease, including hardening of the arteries. A scientific study conducted at the University of California, Davis, concluded that the phenols’ potent antioxidant properties help protect against LDL oxidation, keeping arterial linings healthy. Additional studies lend credence to phenols’ ability to improve circulation, and decrease the fragility of veins and capillary walls.

Polyphenolics is a division of Constellation Wines US, Inc. and manufactures and markets ingredients for the pharmaceutical, nutritional, and beverage industries. For more information about the benefits of phenols, see your local health food retailer or visit

Sarah Clark
(612) 798-760
[email protected]

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