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HSNE-GSEV Antioxidants HSN 5056329503055 https://www.hsnstore.eu/media/catalog/product/o/p/opc-complex-front-gral-hsn_1.webp
HSN Sport Nutrition and Natural Dietetics
EUR 2026-01-13T14:56:19+0000 9.64
I am taking a combination of products to lower my blood pressure, including this OPC Complex. My blood pressure has been significantly reduced after 15 days of taking them. I am very satisfied.
OPC COMPLEX (GRAPE SEED EXTRACT)
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OPC COMPLEX (GRAPE SEED EXTRACT)

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Natural Grape Seed Extract (Vitis vinifera). 20 times more concentrated | Standardised to 95% OPC. Authentic Oligomeric Proanthocyanidins of certified species and native structure: Only 2- and 3-monomer bonds (dimers and trimers). Highly concentrated and effective formula supplemented with natural Vitamin C from Acerola and Vitamin B1 HCl. Suitable for vegan diets.

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Description

Table of contents

OPC Complex - Oligomeric Proanthocyanidins

OPC Complex (Grape Seed Extract) from EssentialSeries is a dietary supplement in vegetable capsules made from Vitis vinifera seed extract, standardized with a high content of Oligomeric Proanthocyanidins (95% OPC), plus Thiamine HCl and natural Vitamin C from acerola berry extract.

Grape seeds naturally contain fiber, proteins, lipids (in the form of fat and oil), carbohydrates, minerals, and between 5 and 8% native content of polyphenolic compounds (like tannins), depending on the variety and other factors such as climate, soil, or ripeness (Bordiga, 2015).

OPC Complex is a formula made from a grape seed extract standardized at high concentrations of the most representative compounds of Vitis vinifera: oligomeric proanthocyanidins.

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From certified species: 100% Vitis vinifera - The best source of OPCs

Grape seeds are the main byproduct of the grape processing industry used to make juices and wines. Grape seed is highly valuable for its polyphenol content.

Compounds like OPCs are found in many plants, as they’re not exclusive to grape seeds, but if we had to crown one source as the clear winner in terms of quantity and structure of these compounds, it’s grape seed.

Sourcemg of proanthocyanidins per 100g of food
Grape seeds3532
Blueberries332
Apples70-141
Pears32-42
Hazelnuts501
Dark chocolate1636

At HSN we exclusively use seeds from the species Vitis vinifera to develop our product, 100% certified species without mixing or hybrids from other botanical species; ensuring the highest quality of the nutritionally active compounds naturally provided by the plant.

High concentration extract - 20:1 ratio - No harsh solvents used

To get the highest concentration of the nutritional constituents characteristic of grape seed, we concentrated the seeds into an extract 20 times more concentrated.

The extraction was done using gentle treatments on the raw material, avoiding extraction methods commonly used in the industry that use harsh solvents like acetone or methanol; at HSN we only use mild solvents to obtain the purest OPC extract, without altering their native oligomeric structures.

We control every detail of the extraction process to achieve the best quality of our herbal extracts, certifying species, identification, purity, and concentration. The best for your nutrition!

Production batches of grape seed extract are analyzed by highly sensitive lab methods to certify a minimum guaranteed content of 95% OPC, also ensuring their oligomeric structure.

OPCs with correct structure: Only dimers and trimers. Strict certified control

Proanthocyanidins are polymers mainly made up of monomers like catechins and epigallocatechins, and they usually have covalent bonds between carbons called 'type B', or form additional links between adjacent monomers called 'type A'.

The common natural connection of oligomeric proanthocyanidins, which is present in our OPC complex, is type B.

Referring to the grape seed itself from which we get our oligomeric proanthocyanidin-rich extract, the main subtypes of proanthocyanidins found are:

  •  B2.
  •  B4.
  •  A2.

They contain exclusively dimers and trimers.

This is an important detail: many OPC supplements on the market claim to offer oligomeric proanthocyanidins when they really don’t, since this specific type of proanthocyanidins is limited to the union of two or three monomers, no more, because otherwise they form polymeric proanthocyanidins, which are different compounds with different nutritional kinetics.

Our OPC Complex provides 570 mg of real Oligomeric Proanthocyanidins, composed exclusively of dimers and trimers, per daily dose.

Formula completed with natural Vitamin C (from acerola) and Thiamine HCl - Synergistic activity

OPC Complex is a dietary supplement developed with a complete formula, as it provides a high concentration of water-soluble vitamins: C and B1.

Vitamin C is pure natural ascorbic acid from acerola berry extract (Malpighia glabra) added to the formula; and Vitamin B1 is provided as Thiamine Hydrochloride; both forms with high concentration and bioavailability.

What are OPCs?

In nature, oligomeric proanthocyanidins serve as defense mechanisms for plants against pathogens and predators.

Due to their unique aroma and special chemical structure, proanthocyanidins can repel insects and also support plants’ resistance against various stressors encountered during growth, boosting their survival rate under adverse conditions.

Properties of OPC Complex

The OPC Complex formula is especially linked to benefits for the circulatory system due to its compounds, partly because grape is a source of antioxidants and it has been shown that proanthocyanidins in grape seeds have several antioxidant activities.

First of all, thanks to the thiamine content, OPC Complex (Grape Seed Extract) supports normal heart function.

Also, it supports blood vessels themselves, partly due to its 'core' grape seed content, since Vitis vinifera contributes with a beneficial effect on blood pressure, and Vitamin C contributes to normal collagen formation for the normal function of blood vessels.

Product use and combination

OPC Complex, grape seed extract rich in Oligomeric Proanthocyanidins, is compatible with any dietary supplement as it has no general contraindications with other products; however, referring to recommended combinations with specific supplements, due to its functions, it’s often used together with:

Enjoy the highest quality dietary supplements at HSN.

Bibliographic references

Nutritional Info.

Nutritional Facts

OPC COMPLEX (GRAPE SEED EXTRACT) - 120 veg caps
daily doseper serving
Serving size: 1 veg caps
daily dose: 2 veg caps
Servings per container: 120
Daily amount
Grape seed extract (20:1) (95% OPC) (Vitis vinifera) 600mg
seed equivalence 12000mg
Oligomeric proanthocyanidins 570mg
Acerola berry extract (15:1) (25% vitamin C) (Malpighia glabra) 400mg
berry equivalence 6000mg
Vitamin C (as ascorbic acid) 100mg
Vitamin B1 1.1mg
thiamine hydrochloride 1.4mg
NRVs (Nutrient Reference Values) established in Regulation (EU) 1169/2011 of 25 October 2011. †† NRVs are not established on this occasion.

Ingredients

Grape extract [20:1, from Vitis vinifera seed, 95% oligomeric proanthocyanidins (OPC)], acerola extract (15: 1, from Malpighia glabra berry, 25% vitamin C), vegetable capsule [glazing agent (hydroxypropyl methyl cellulose)], rice flour, anti-caking agent (tricalcium phosphate), anti-caking agent (L-leucine), thiamine hydrochloride (vitamin B1).

Warnings

Store in a cool (below 25°C), dry and dark place. Do not exceed the stated recommended daily dose. Keep out of reach of the smallest children. Nutritional supplements should not be used to replace a balanced diet. It is necessary to maintain a varied and balanced diet and a healthy lifestyle. Health claim awaiting European authorization.

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How to take OPC COMPLEX (GRAPE SEED EXTRACT) - 120 veg caps

Take 1 vegetable capsule, 2 times a day.

Questions

The product reviews and opinions published reflect only the customers’ views and experiences. HSN does not verify or endorse such comments or claims, and is not responsible for the content provided in the reviews. Statements regarding food supplements have not been evaluated by the EFSA (European Food Safety Authority) and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.

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CUSTOMER REVIEWS

36 real opinions

The product reviews and opinions published reflect only the customers’ views and experiences. HSN does not verify or endorse such comments or claims, and is not responsible for the content provided in the reviews. Statements regarding food supplements have not been evaluated by the EFSA (European Food Safety Authority) and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.

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  • Seems to work to lower blood pressure

    Ricardo 08/01/2026

    I am taking a combination of products to lower my blood pressure, including this OPC Complex. My blood pressure has been significantly reduced after 15 days of taking them. I am very satisfied.

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  • For the heart

    Lore 19/12/2025

    Standardized with a high content of Oligomeric Proanthocyanidins (95% OPC), plus Thiamine HCl and natural Vitamin C from Acerola berry extract, rich in ascorbic acid. Perfect for the heart, rich in polyphenols.

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  • Good supplement at a good price!

    João 29/06/2025

    HSN's OPC Complex is very good! I started using it to supplement Resveratrol and I can already see its antioxidant and anti-inflammatory effects. Good supplement at a good price! I recommend it!

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  • Excellent

    Oscar 26/06/2025

    Very good value for money product, it is of much better quality than other products of other brands.

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  • Excellent.

    Flávio. 20/06/2025

    I had to wait until it was back in stock to try this product. I found it really excellent, especially taking the full dose just before training. I'll buy it again and I recommend it.

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