Home Ingredients BeGrape (Grape Seed OPC)
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BeGrape (Grape Seed OPC)

Vitis vinifera
Evidence Level
Strong
3 Clinical Trials
5 Documented Benefits
4/5 Evidence Score

BeGrape is Groupe Berkem's branded range of grape seed extracts standardized for oligomeric proanthocyanidins (OPC). The grape seeds are upcycled from hand-harvested Champagne-region vineyards, turning a winemaking by-product into a concentrated antioxidant ingredient. OPC-rich grape seed extracts like BeGrape are among the most studied plant polyphenols, with human evidence for antioxidant activity, healthy blood pressure, and vascular and circulatory support. Berkem also produces a gut-focused product, Biombalance, within the BeGrape range.

Studied Dose Grape seed OPC extracts are typically standardized to a high proanthocyanidin content and used at 150 to 300 mg per day in human studies.
Active Compound Grape seed extract (Vitis vinifera) standardized to oligomeric proanthocyanidins (OPC), mainly B-type procyanidins built from catechin and epicatechin units.

Benefits

Antioxidant Defense

Grape seed OPCs are powerful free-radical scavengers that help neutralize oxidative stress, one of the most consistent and well-documented effects of grape seed extract in human studies.

Supported by Trial 1, Trial 2

Healthy Blood Pressure

In placebo-controlled trials, standardized grape seed extract supported blood pressure within the normal range, an effect tied to improved blood vessel function.

Supported by Trial 1

Circulation and Vascular Support

OPCs help maintain the integrity of capillaries and blood vessels and support healthy blood flow, which underlies traditional use for leg heaviness and circulation.

Supported by Trial 1, Trial 2

Metabolic and Liver Support

Human research on grape seed extract has reported improvements in metabolic and liver markers, supporting its use as part of a metabolic-health routine.

Supported by Trial 2

Stress Resilience

Alongside blood-pressure effects, a controlled trial found grape seed extract reduced perceived stress in healthy volunteers.

Supported by Trial 1, Trial 2

Mechanism of action

1

Endothelial Nitric Oxide Support

Grape seed proanthocyanidins enhance endothelial nitric oxide synthase (eNOS) activity, promoting vasodilation and helping maintain healthy blood pressure and circulation.

2

Free-Radical Scavenging

The oligomeric structure of grape seed procyanidins makes them efficient electron donors that quench reactive oxygen species and spare endogenous antioxidants.

3

Anti-Inflammatory Signaling

OPCs down-regulate pro-inflammatory mediators, contributing to vascular, oral, and metabolic benefits seen in human trials.

4

Capillary and Collagen Protection

Proanthocyanidins bind and stabilize collagen and elastin and reduce capillary fragility, a mechanism behind their traditional circulatory uses.

Clinical trials

1
Grape Seed Extract, Blood Pressure and Stress (RCT)

Randomized, double-blind, placebo-controlled trial of standardized grape seed extract in healthy volunteers.

Healthy adult volunteers.

300 mg/day modulated blood pressure within the normal range and reduced perceived stress versus placebo, with good tolerability.

2
Grape Seed Extract in Non-Alcoholic Fatty Liver Disease (RCT)

Randomized controlled trial of grape seed extract supplementation in adults with NAFLD.

Adults with non-alcoholic fatty liver disease.

Supplementation improved liver and metabolic markers compared with control, supporting metabolic benefits of grape seed OPCs.

3
Grape Seed Extract as a Periodontal Adjuvant (RCT)

Randomized trial of grape seed extract as an adjunct to scaling and root planing.

Patients with periodontal pockets.

Adding grape seed extract improved anti-inflammatory and antioxidant outcomes in periodontal tissue versus standard cleaning alone.

Side effects and drug interactions

Common Potential side effects

Generally well tolerated.
Mild digestive upset (uncommon).
Headache or dizziness (rare).
Possible allergic reaction in people sensitive to grapes.
Theoretical additive bleeding risk at high doses.

Important Drug interactions

ANTICOAGULANTS / ANTIPLATELETS - mild antiplatelet effect; use caution with warfarin, clopidogrel, or aspirin.
ANTIHYPERTENSIVES - may add to blood-pressure-lowering effects.
CYP450 SUBSTRATES - high-dose polyphenols may in theory alter drug metabolism.
SURGERY - consider pausing before scheduled surgery.

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Frequently asked questions about BeGrape (Grape Seed OPC)

What is BeGrape (Grape Seed OPC)?

BeGrape is Groupe Berkem's branded range of grape seed extracts standardized for oligomeric proanthocyanidins (OPC). The grape seeds are upcycled from hand-harvested Champagne-region vineyards, turning a winemaking by-product into a concentrated antioxidant ingredient.

What is the recommended dosage of BeGrape (Grape Seed OPC)?

The clinically studied dose for BeGrape (Grape Seed OPC) is Grape seed OPC extracts are typically standardized to a high proanthocyanidin content and used at 150 to 300 mg per day in human studies.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is BeGrape (Grape Seed OPC) used for?

BeGrape (Grape Seed OPC) is studied for antioxidant defense, healthy blood pressure, circulation and vascular support. Grape seed OPCs are powerful free-radical scavengers that help neutralize oxidative stress, one of the most consistent and well-documented effects of grape seed extract in human studies.

Are there side effects from taking BeGrape (Grape Seed OPC)?

Reported potential side effects may include: Generally well tolerated. Mild digestive upset (uncommon). Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Is BeGrape (Grape Seed OPC) safe to take?

Whether BeGrape (Grape Seed OPC) is safe depends on the dose, your overall health, and any medications you take. At studied doses, reported side effects can include: Generally well tolerated. It may also interact with certain medications. BeGrape (Grape Seed OPC) is not suitable for everyone — consult a healthcare provider before use if you are pregnant or breastfeeding, have a medical condition, or take prescription medications.

References(3 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Schön C, Allegrini P, Engelhart-Jentzsch K, Riva A, Petrangolini G. Grape Seed Extract Positively Modulates Blood Pressure and Perceived Stress: A Randomized, Double-Blind, Placebo-Controlled Study in Healthy Volunteers. Nutrients. 2021;13(2):654. doi: 10.3390/nu13020654.PubMedUsed to support: Grape seed extract human RCT in healthy volunteers: 300 mg/day modulated blood pressure within the normal range and reduced perceived stress versus placebo, showing tolerability and systemic effects of grape seed OPCs. Not Biombalance-specific.
  2. Ghanbari P, Alboebadi R, Bazyar H, Raiesi D, ZareJavid A, Azadbakht MK, et al. Grape seed extract supplementation in non-alcoholic fatty liver disease. Int J Vitam Nutr Res. 2024;94(5-6):365-376. doi: 10.1024/0300-9831/a000805.PubMedUsed to support: Randomized controlled trial of grape seed extract in non-alcoholic fatty liver disease reported improvements in liver and metabolic markers, supporting metabolic and liver-related benefits of grape seed OPCs.
  3. Das M, Das AC, Panda S, Greco Lucchina A, Mohanty R, Manfredi B, et al. Clinical efficacy of grape seed extract as an adjuvant to scaling and root planing in treatment of periodontal pockets. J Biol Regul Homeost Agents. 2021;35(2 Suppl. 1):89-96. doi: 10.23812/21-2supp1-8.PubMedUsed to support: Randomized trial using grape seed extract as an adjunct to dental scaling and root planing showed added anti-inflammatory and antioxidant benefit in periodontal pockets, illustrating local anti-inflammatory activity of OPCs.