OPC 40
Grape Seed Extract

The Original

Each 350mg capsule of our original OPC 40 grape seed extract contains 140mg OPC, derived entirely from French Chardonnay grape seeds. Derived through ultra pure extraction process in France using only water and edible ethanol. Ultra pure vegan capsule shells made from plant-based cellulose (free from carrageenans and PEG). Vegan, no additives. 2x 60 capsules
  • Premium grape seed extract derived entirely from white Chardonnay grapes (Vitis vinifera)
  • Cultivation and extraction from the most renowned producer in France
  • Per capsule 350mg grape seed extract, of which 140mg OPC
  • Cultivated in Champagne: ideal location for OPC-rich grape seeds
  • Ultra pure extraction process using only water and edible ethanol
  • Free from chemical residues such as methanol, acetone, and n-hexane
  • Outstanding extraction ratio of 31:1 (31kg grape seeds : 1kg extract)
Customize <span class="protect-case">OPC</span> 40 <br/> Grape Seed Extract
2 x OPC 40 Grape Seed Extract   + €0.00

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€37.81 €39.80

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€708.05 / 1kg

Premium Bioactive Ingredients

  • Premium grape seed extract from a renowned manufacturer in France
  • Derived from selected white Chardonnay grapes (Vitis vinifera)
  • Cultivated in Champagne, an ideal location for OPC-rich grape seeds
  • Ultra-pure extraction directly on site in France using only water and food grade ethanol
  • Only one ingredient: 350mg grape seed extract with at least 140mg OPC per capsule
  • High proportions of particularly valuable OPC compounds:
  •   Di- to pentamers: approx. 52mg per capsule (approx. 15%)
  •   Di- to tetramers: approx. 48mg per capsule (approx. 14%)
  • Outstanding extraction ratio of 31:1 (31kg grape seeds : 1kg extract)
  • Highly purified water-ethanol extract of valuable grape polyphenols using membrane filtration
  • Free from chemical residues such as methanol, acetone and n-hexane
  • Trusted French manufacturer with over 20 years’ experience
  • Laboratory tested: over 95% total polyphenols, 40% OPC

How are we different?

The quality of different OPC products on the market can vary greatly. Although polyphenols comprise a large number of active plant ingredients, of which OPC is just one, some manufacturers report the polyphenol content rather than the OPC content, which can be misleading. Common laboratory tests such as the DMAC or vanillin test can also yield misleading or inflated OPC values of up to 400% of the actual OPC content. Our OPC 40 French grape seed extract has a laboratory-tested polyphenol content of over 95% and an OPC content of over 40%. Especially important to note when considering OPC products is the content of the particularly bioactive di- to pentamers, which should ideally be between 10-20%.

For our grape seed extract, we exclusively use the OPC-rich seeds of white Chardonnay grapes (Vinis vinifera) that have been harvested and processed in France by a trusted manufacturer with over 20 years of experience. The region of Champagne grows grape seeds that are rich in OPC, which results in a high extraction rate of 1kg extract per 31kg grape seeds. Many producers use French grapes, but the extraction process often takes place in China.

Many producers process their extracts with cost-saving chemical solvents that leave behind residues which can be detrimental to health and the environment. However, our grape seed extract is produced using gentle and environmentally friendly methods. Our ultra pure extract is derived through a cold-press extraction method using only water and edible ethanol (70% water, 30% ethanol). Our final product is therefore guaranteed free from toxic extraction residues such as methanol, acetone, n-hexane, and ethanol.

For the capsule shells we use custom-made HPMC capsules that, unlike most other HPMC and pullulan capsules on the market, are 100% free from controversial additives such as carrageenans and PEG. We then package this product in environmentally friendly amber glass.

We use environmentally friendly amber glass bottles for the packaging of this product.


  • Premium active ingredients in their purest form
  • Sourced directly from the world’s best producers
  • Our select raw materials are the basis of all our formulations
  • Complete avoidance of all unnecessary additives and adjuvants
  • Exclusive use of valuable natural ingredients for additives
  • We voluntarily declare all ingredients
  • All extractions performed without the use of chemical solvents
  • Custom production when necessary, in order to achieve the highest possible level of purity
  • Independent laboratory testing available on product pages
  • Raw materials sourced only from premium suppliers who are committed to fair working conditions
  • Amber glass and compostable pouches used for packaging
  • Vegan capsule shells, free from PEG and carrageenans
  • Packaged in the EU according to HACCP, GMP and ISO 22000:2018 standards
  • Stored in non-toxic containers
  • Shipped in mineral oil-free boxes
  • All products guaranteed 100% free from magnesium stearate, silicon dioxide, nanoparticles (no legal opportunism), genetic engineering, artificial colours and flavours, titanium dioxide and added sugar & sweeteners


OPCs (Oligomeric Proanthocyanidins) named also as vitamin P, are a group of substances belonging to the flavonols, which consist of polymers of catechins and epicatechins. Proanthocyanidins are present in a whole range of fruits and plants, including the seeds and skins of grapes, in berries and citrus fruits, but also in the protective bark layer of trees.

The various proanthocynidins are categorised by their number of units (e.g. monomer for one unit, dimer for two). The exact definition of OPC is unclear and may include only di- to tetramers, di- to pentamers, di- to hexamers, or even all proanthocyanidins except monomers.

For a long time, only the dimers, i.e. consisting of two, and the trimers, consisting of three units, were considered to be bioactive. However, this has since been disproven, allowing a complex interaction of all components of the grape seed extract (including the polymeric proanthicyanidins such as hexamers and heptamers) to be used. OPC compounds are contained in large quantities, especially in pine bark and grape seeds, in which the individual proanthocyanidins differ from each other both in form and in their effect. There is also a notable amount of vital proanthocyanidin-B3-3'-O-gallate in grape seed extract.


Recommended Dose

Take 2 capsules ( 280mg OPC) with 200ml water daily before a meal.

Food Supplement

Do not exceed the recommended dose. Nutritional supplements cannot replace a balanced and varied diet. Keep out of reach of children.


Store in a cool, dry place away from direct sunlight and heat.


Ingredients: Grape Seed Extract 
Capsule shells: Hydroxypropyl Methylcellulose.
Contains: 60 capsules

Ingredients per Daily Dose (2 Capsules) % NRV*
Grape seed extract 700mg -**
of which pure OPC 280mg -**

* Nutrient Reference Value
** no reference available

Per capsule: 350mg grape seed extract, of which 140mg OPC 
In total: 21,000mg grape seed extract, 8,400mg OPC / jar

Product Details

German Pharmaceutical Number (PZN): 16624808
 Champagne, France 
Production:  In-house production in Europe, bottling and encapsulation in the EU according to HACCP, GMP / ISO 22000:2018 standards
Finished products packaged in amber glass jars and stored in non-toxic containers
Shipping in mineral oil-free boxes
Capsules:  Plant-based cellulose (HPMC). Vegan
Premium HPMC quality: Free from controversial additives such as carrageenans and PEG
Amber glass jar to protect against light and oxidation (free from plasticisers and BPA) 
To Reuse:  
Remove product label by soaking the jar in warm water for 5 minutes. Glue residue can be removed with dish soap. 

Laboratory Tests

The purity of our formulas is important to us. This is why we have both our raw ingredients as well as our finished products extensively tested by independent laboratories to confirm purity and active ingredient content. Here, we have provided the results of some of the tests carried out on this product.

Sunday Natural

Our Philosophy

For thousands of years, cultures all over the world have been using medicinal plants and nutritious foods to naturally foster and maintain vitality and good health.

With our products, we try to emulate this ancient wisdom as much as possible.

Consequently, our philosophy is simple: everything we do meets the highest standards of quality and purity; our focus is on organic and natural ingredients.

We follow this philosophy with meticulous care on all levels and down to every last detail.

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