# Provein (Pinus radiata)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/provein
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-05
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Pinus radiata bark extract, Radiata pine bark extract, Monterey pine bark extract, Insignis pine bark extract, Pinus radiata polyphenol extract, Radiata pine proanthocyanidin extract

## Overview

Provein is a proprietary pine bark extract derived from Pinus radiata, standardized to contain proanthocyanidins comprising 50–60% of its total polyphenol content. These oligomeric proanthocyanidins are believed to exert antioxidant and vascular-supportive effects primarily by scavenging [reactive oxygen species](/ingredients/condition/antioxidant) and modulating endothelial nitric oxide bioavailability.

## Health Benefits

• Potential [antioxidant](/ingredients/condition/antioxidant) effects attributed to high proanthocyanidin content (50-60% of polyphenols) - no clinical evidence available
• Possible [anti-inflammatory](/ingredients/condition/inflammation) properties linked to flavonoid-rich composition - no clinical evidence available
• Potential anticarcinogenic effects suggested for polyphenolic compounds - no clinical evidence available
• May support vascular health based on proanthocyanidin content similar to other pine bark extracts - no clinical evidence available
• Could provide cellular protection through procyanidin and prodelphinidin compounds - no clinical evidence available

## Mechanism of Action

Provein's proanthocyanidins inhibit NADPH oxidase-derived superoxide production and scavenge hydroxyl and peroxyl radicals, reducing [oxidative stress](/ingredients/condition/antioxidant) in vascular endothelium. The flavonoid fractions, including catechin and epicatechin monomers, suppress NF-κB transcription factor activation, thereby downregulating [pro-inflammatory cytokine](/ingredients/condition/inflammation)s such as TNF-α, IL-1β, and IL-6. Additionally, proanthocyanidins may upregulate endothelial nitric oxide synthase (eNOS) activity, promoting vasodilation and improving microcirculatory function.

## Clinical Summary

Clinical evidence specifically for Provein (Pinus radiata extract) is currently absent, with no published randomized controlled trials or observational studies directly evaluating this proprietary ingredient. Available evidence is extrapolated from research on structurally similar pine bark extracts such as Pycnogenol (Pinus pinaster), which has demonstrated modest improvements in [endothelial function](/ingredients/condition/heart-health) and blood pressure in trials of 30–200 participants. Polyphenol-class compounds from pine bark have shown statistically significant reductions in [oxidative stress](/ingredients/condition/antioxidant) biomarkers (e.g., 8-isoprostane, malondialdehyde) in some small trials, though effect sizes vary considerably. Until Provein-specific clinical data are published, all attributed health benefits remain preliminary and should be interpreted with caution.

## Nutritional Profile

Provein (Pinus radiata bark extract) is a concentrated polyphenolic ingredient, not a significant source of macronutrients (negligible protein, fat, and carbohydrates at typical dosage levels of 100-300mg). Bioactive compounds dominate the profile: proanthocyanidins (oligomeric proanthocyanidins/OPCs) constitute approximately 50-60% of total polyphenol content, consistent with maritime/radiata pine bark extracts. Total polyphenol content is typically 65-75% by dry weight as measured by Folin-Ciocalteu method. Flavonoid subclasses include catechin, epicatechin, taxifolin (dihydroquercetin), and ferulic acid as monomeric units. Phenolic acids including caffeic acid and p-coumaric acid are present at minor concentrations (<5% of polyphenol fraction). Stilbenes such as pinosylvin are characteristic of Pinus species and present at low but detectable levels. Micronutrient content is negligible at supplemental doses. Bioavailability notes: proanthocyanidin monomers (catechin, epicatechin) show moderate intestinal absorption (~20-30%); larger OPC oligomers (DP3+) have limited direct absorption and are partially metabolized by colonic microbiota into phenolic acids (e.g., 3-hydroxyphenylpropionic acid) which are subsequently absorbed. Taxifolin demonstrates relatively higher bioavailability among flavonoids in this matrix. Standardization of Provein is based on proanthocyanidin content verified by DMAC or butanol-HCl assay methods.

## Dosage & Preparation

No clinically studied dosage ranges, forms, or standardization details are available as no human clinical trials have been conducted on Provein. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Provein is generally considered well-tolerated based on the broader safety profile of Pinus species bark extracts, with mild gastrointestinal discomfort (nausea, bloating) reported at higher doses in analogous pine bark extract studies. Due to potential antiplatelet activity mediated by proanthocyanidin inhibition of thromboxane A2 synthesis, concurrent use with anticoagulants or antiplatelet drugs such as warfarin, aspirin, or clopidogrel warrants medical supervision. [Immunomodulatory](/ingredients/condition/immune-support) flavonoid activity may theoretically reduce efficacy of immunosuppressant medications, and individuals with pine or tree resin allergies should avoid use. Safety data in pregnant or breastfeeding women are not established, and use is not recommended in these populations without physician guidance.

## Scientific Research

No human clinical trials, randomized controlled trials, or meta-analyses specifically on Provein (Pinus radiata bark extract) were identified in the available research. All suggested health benefits are based on in vitro characterization of the extract's polyphenolic composition and general properties attributed to similar compounds.

## Historical & Cultural Context

No historical or traditional medicinal uses of Pinus radiata bark or Provein are documented in the available sources. The plant has been primarily utilized for industrial applications including timber and pulping rather than traditional medicine.

## Synergistic Combinations

Vitamin C, Grape Seed Extract, Quercetin, Resveratrol, Maritime Pine Bark Extract

## Frequently Asked Questions

### What is Provein and how does it differ from Pycnogenol?

Provein is a polyphenol extract standardized from Pinus radiata (Monterey pine) bark, while Pycnogenol is derived from Pinus pinaster (French maritime pine). Both are rich in proanthocyanidins and share similar proposed mechanisms, but Provein's proanthocyanidin content is standardized to 50–60% of total polyphenols and lacks the independent clinical trial database that Pycnogenol has accumulated over decades of research.

### Does Provein have antioxidant properties?

Provein contains oligomeric proanthocyanidins and catechin-type flavonoids that demonstrate free-radical scavenging capacity in vitro, including neutralization of hydroxyl radicals and inhibition of lipid peroxidation. However, no clinical studies have measured antioxidant biomarkers such as ORAC values or plasma 8-isoprostane reduction specifically in humans taking Provein, so in vivo antioxidant potency remains unconfirmed.

### What is the recommended dosage for Provein pine bark extract?

No established clinical dosage exists specifically for Provein, as no human trials have defined a therapeutic dose range. Analogous pine bark extracts like Pycnogenol are typically studied at 50–150 mg per day in clinical trials. Manufacturers of Provein-containing products should be consulted for product-specific dosing guidance, and a qualified healthcare provider should be involved before initiating supplementation.

### Can Provein interact with blood thinners or anticoagulant medications?

Proanthocyanidins in Provein may inhibit platelet aggregation by suppressing thromboxane A2 synthesis and reducing arachidonic acid-induced platelet activation, creating an additive anticoagulant effect when combined with drugs like warfarin, aspirin, or clopidogrel. This interaction could increase bleeding risk, and INR monitoring may be warranted for patients on warfarin who begin taking proanthocyanidin-rich supplements. Medical supervision is strongly advised before combining Provein with any antiplatelet or anticoagulant therapy.

### Is there evidence that Provein has anti-cancer properties?

Anticarcinogenic effects have been proposed for Provein based on its polyphenol content, as proanthocyanidins and flavonoids have demonstrated pro-apoptotic and anti-proliferative activity in various cancer cell lines in vitro. These effects are linked to inhibition of NF-κB signaling and modulation of Bcl-2 family proteins, but no clinical or even animal-model trials specific to Provein have been conducted. Current evidence is purely preclinical and extrapolated from related polyphenol research, making anti-cancer claims unsubstantiated for this ingredient.

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

There is insufficient clinical data on the safety of Provein (Pinus radiata) during pregnancy and breastfeeding, so it is generally recommended to avoid supplementation during these periods unless explicitly directed by a healthcare provider. The high proanthocyanidin content and potential bioactive effects have not been studied in pregnant or nursing populations. Consulting with an obstetrician or midwife before use is advisable to ensure safety for both mother and infant.

### What populations or health conditions may benefit most from Provein supplementation?

While proanthocyanidin-rich pine bark extracts are traditionally associated with vascular and antioxidant support, Provein currently lacks robust clinical evidence to identify specific populations that would benefit most from supplementation. Some individuals interested in general antioxidant support or those seeking plant-based polyphenol sources may consider it, though evidence-based recommendations cannot be made at this time. Further research is needed to establish which patient groups or conditions would derive measurable therapeutic benefit.

### How is Provein pine bark extract processed, and does processing affect its potency?

Provein is standardized to concentrate its proanthocyanidin content (typically 50-60% of polyphenols), which suggests controlled extraction and processing methods are employed to ensure consistent active compound levels across batches. The specific extraction process, solvents used, and standardization protocols directly influence the final potency and bioavailability of the polyphenolic compounds. Consumers should verify the standardization percentage and extraction method on product labels to ensure they are receiving a consistently potent formulation.

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