# ActiVin (Vitis vinifera)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/activin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Vitis vinifera extract, Grape seed extract, GSE, Standardized grape seed extract, OPC-rich grape seed extract, Proanthocyanidin extract, Grape seed proanthocyanidin extract, GSPE

## Overview

ActiVin is a standardized grape seed extract (Vitis vinifera) concentrated in oligomeric proanthocyanidins (OPCs), particularly procyanidins, which neutralize [reactive oxygen species](/ingredients/condition/antioxidant) by donating hydrogen atoms to free radicals. Its primary mechanism involves direct radical scavenging and upregulation of endogenous antioxidant defenses through Nrf2 pathway activation.

## Health Benefits

• [Antioxidant activity](/ingredients/condition/antioxidant) demonstrated in vitro through DPPH radical scavenging (preliminary evidence only)
• Potential cellular protection based on general grape seed extract studies showing cytotoxicity to cancer cell lines (97.9% inhibition on HCT-116 cells at IC50 12.5 µg/mL - preliminary evidence)
• May support [cardiovascular health](/ingredients/condition/heart-health) through OPC content (no human clinical evidence available for ActiVin)
• Possible [anti-inflammatory](/ingredients/condition/inflammation) effects based on polyphenol composition (no direct clinical evidence)
• Cosmetic safety established by CIR review for topical use (not oral supplementation evidence)

## Mechanism of Action

ActiVin's procyanidins and catechin monomers donate hydrogen atoms to neutralize DPPH and hydroxyl radicals, measured via in vitro scavenging assays. These OPCs also modulate the Nrf2-Keap1 pathway, upregulating cytoprotective enzymes including heme oxygenase-1 (HO-1) and superoxide dismutase (SOD). Cytotoxic activity against HCT-116 colorectal cancer cells (IC50 12.5 µg/mL, 97.9% inhibition) is hypothesized to involve caspase-mediated apoptosis and inhibition of [NF-κB](/ingredients/condition/inflammation) signaling, though human mechanistic data are absent.

## Clinical Summary

Current evidence for ActiVin specifically is limited to in vitro assays; no published randomized controlled trials have been conducted on this branded ingredient in human subjects. The 97.9% HCT-116 cell inhibition at 12.5 µg/mL and DPPH radical scavenging data are preliminary, cell-culture findings that do not establish human efficacy. Broader grape seed extract research in humans includes small trials (n=24–61) showing modest reductions in LDL oxidation and [blood pressure](/ingredients/condition/heart-health), but these cannot be directly extrapolated to ActiVin without bridging studies. Overall, the evidence base is rated preliminary to insufficient, requiring well-powered human RCTs before clinical claims can be substantiated.

## Nutritional Profile

ActiVin is a standardized grape seed extract (Vitis vinifera) concentrate, not a whole food, so macronutrient content (fat, carbohydrate, protein) is negligible at typical supplemental doses (50–300 mg/day). Primary bioactive compounds are oligomeric proanthocyanidins (OPCs), standardized to a minimum of 95% polyphenols/OPCs by manufacturer specification — this is the defining characteristic of the ActiVin branded extract. Specific constituents include: procyanidin dimers (B1, B2, B3, B4), trimers, and higher oligomers; catechin and epicatechin monomers (estimated 5–15% of total polyphenol content); gallic acid esters of the above (e.g., epicatechin-3-O-gallate); and trace resveratrol (stilbene), though concentrations are not standardized in seed extract and are generally low (<0.1% of extract weight). No meaningful vitamin or mineral content is present at supplemental doses. Fiber content is absent in the extract form. Bioavailability: OPC monomers (catechin, epicatechin) demonstrate moderate oral bioavailability (~20–40% absorption in humans); larger oligomers (trimers and above) show substantially lower intestinal absorption and are partially metabolized by colonic microbiota into smaller phenolic acids (e.g., 3-hydroxyphenylpropionic acid, protocatechuic acid) which may contribute to systemic effects. Peak plasma concentrations of catechin/epicatechin typically occur 1–2 hours post-ingestion. The ActiVin brand is produced by Constellation Brands/IEV using a water-based extraction process, which preserves native OPC profiles without solvent residues, but specific lot-to-lot concentration data beyond the 95% polyphenol standardization is not publicly documented.

## Dosage & Preparation

No clinically studied dosage ranges for ActiVin have been established in human trials. The product is standardized to contain 54% dimeric OPCs, 13% trimeric, and 7% tetrameric OPCs in powder form. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Grape seed extracts including standardized OPC products are generally well tolerated at doses of 100–300 mg/day in short-term human studies, with headache, dizziness, and mild GI upset reported infrequently. ActiVin may potentiate anticoagulant and antiplatelet drugs such as warfarin and aspirin by inhibiting platelet aggregation, increasing bleeding risk. It may also interact with CYP3A4-metabolized medications by modulating cytochrome P450 enzyme activity, potentially altering plasma drug levels. Safety in pregnancy, lactation, and pediatric populations has not been established, and use in these groups should be avoided without medical supervision.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses specifically on ActiVin were found in the research. The available evidence is limited to in vitro [antioxidant](/ingredients/condition/antioxidant) assays and general grape seed extract studies, with no PubMed PMIDs provided for ActiVin-specific research.

## Historical & Cultural Context

No historical or traditional medicinal uses of ActiVin or grape seed extracts were described in the available research. The product appears to be a modern standardized extract without documented traditional use.

## Synergistic Combinations

Vitamin C, Vitamin E, Resveratrol, Quercetin, Pine Bark Extract

## Frequently Asked Questions

### What is ActiVin and how is it different from regular grape seed extract?

ActiVin is a trademarked, standardized grape seed extract from Vitis vinifera grapes, produced to deliver a consistent concentration of oligomeric proanthocyanidins (OPCs) and procyanidin dimers and trimers. Unlike generic grape seed powders, standardized extracts like ActiVin specify OPC content (typically 85–95% polyphenols), which allows for more reproducible dosing in research and supplementation contexts.

### What dose of ActiVin grape seed extract is typically used?

No ActiVin-specific clinical dosing guidelines exist due to the absence of human RCTs on this branded ingredient. General grape seed extract research has used doses between 100 mg and 300 mg per day of standardized OPC extract in adult populations, with short-term studies up to 12 weeks. Manufacturers should be consulted for product-specific standardization details before extrapolating dosage from broader GSE literature.

### Can ActiVin grape seed extract help with cancer?

In vitro data show ActiVin inhibited HCT-116 colorectal cancer cell viability by 97.9% at an IC50 of 12.5 µg/mL, which is a promising but strictly preliminary finding. Cell culture results do not predict human outcomes because bioavailability, metabolism, and tumor microenvironment differ substantially in vivo. No human clinical trials have investigated ActiVin or generic grape seed extract as a cancer treatment, and it should not be used as a substitute for standard oncology care.

### Does ActiVin interact with blood thinners like warfarin?

Yes, OPC-rich grape seed extracts including ActiVin have demonstrated antiplatelet activity in preclinical models by inhibiting thromboxane A2 synthesis and ADP-induced platelet aggregation. Combined use with anticoagulants such as warfarin or antiplatelet agents like clopidogrel may additively increase bleeding risk. Patients on blood-thinning medications should consult a physician before using any grape seed extract supplement.

### How does ActiVin's antioxidant activity work at the molecular level?

ActiVin's procyanidins and flavan-3-ol monomers (catechin, epicatechin) scavenge reactive oxygen species by donating hydrogen atoms from their phenolic hydroxyl groups, directly quenching DPPH, superoxide, and hydroxyl radicals. Additionally, these compounds activate the Nrf2-Keap1 transcription pathway, inducing expression of antioxidant response element (ARE)-driven enzymes including glutathione peroxidase and heme oxygenase-1. Current evidence for this mechanism in ActiVin is based on in vitro assays; human pharmacodynamic confirmation is lacking.

### Is ActiVin safe to take during pregnancy or while breastfeeding?

There is insufficient clinical evidence on ActiVin's safety during pregnancy and breastfeeding, so it is not recommended for these populations without medical guidance. While grape seed extracts are generally considered safe in food amounts, concentrated supplements like ActiVin have not been adequately studied in pregnant or nursing women. Consult a healthcare provider before use during these periods.

### What is the quality of clinical evidence supporting ActiVin's health claims?

Most evidence for ActiVin is preliminary, consisting of in vitro studies and animal research rather than human clinical trials. While laboratory studies show promising antioxidant activity and potential effects on cancer cell lines, these results have not been confirmed in human populations. Current evidence is insufficient to make definitive claims about ActiVin's effectiveness for specific health conditions in humans.

### Can I get the same antioxidant benefits from eating grapes or grape products instead of ActiVin supplements?

While grapes and grape products contain beneficial polyphenols and OPCs, ActiVin is a concentrated extract that delivers significantly higher levels of these compounds than whole food sources alone. However, whole grapes offer additional fiber, water, and nutrients that supplements do not provide. Whether supplementation is necessary depends on individual diet and health goals, which should be discussed with a healthcare provider.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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