Named Bioactive Compounds · Compound
Pycnogenol (Flavonoid Mixture)
Strong Evidenceflavonoid
Hermetica Superfood Encyclopedia
Pycnogenol is a standardized extract from French maritime pine bark containing procyanidins and other polyphenolic compounds. It functions as a potent antioxidant and supports vascular health through nitric oxide enhancement and collagen stabilization.
Pycnogenol is a patented, standardized extract derived from the outer bark of French maritime pine (Pinus pinaster Aiton, subspecies atlantica), cultivated exclusively in southwestern France (Landes de Gascogne). The extract is produced through a standardized process using 70% ethanol and 30% water in patented equipment, resulting in a flavonoid-rich mixture standardized to contain 70 ± 5% procyanidins.
While the research indicates Pycnogenol is 'one of the most researched herbal supplement preparations in terms of both clinical studies and its underlying biological activity,' the provided sources do not contain specific human clinical trial data, PubMed PMIDs, sample sizes, or detailed outcomes from randomized controlled trials. Additional sources beyond those provided would be necessary to describe specific RCTs and meta-analyses.
The research dossier does not contain information on clinically studied dosage ranges for different forms or standardization protocols used in human studies. Consult a healthcare provider before starting any new supplement.
Pycnogenol is a standardized bark extract from French maritime pine (Pinus pinaster) and is not a conventional nutritional source but rather a concentrated polyphenolic supplement. Key bioactive compounds include: • Procyanidins (oligomeric proanthocyanidins/OPCs): 65–75% of extract by weight, composed primarily of catechin and epicatechin subunits linked in oligomeric chains (dimers through heptamers and higher); procyanidin B1 and B3 are prominent dimers • Monomeric flavan-3-ols: catechin (~2–6%), epicatechin (~1–4%), and taxifolin (dihydroquercetin, ~1–5%) • Phenolic acids: caffeic acid (~1–3%), ferulic acid (~0.5–2%), p-hydroxybenzoic acid, protocatechuic acid, gallic acid, and vanillic acid (each typically <1%) • Cinnamic acid derivatives: including caffeoylquinic acids • Glycosylated flavonoids: trace amounts of quercetin and myricetin glycosides • Typical supplement dose: 50–300 mg/day; standardized to contain minimum 65–75% procyanidins. No significant macronutrients (protein, fat, carbohydrate), vitamins, or minerals at supplemental doses. Caloric contribution is negligible. Bioavailability notes: Monomeric catechin and epicatechin are reasonably bioavailable with detectable plasma levels within 1–2 hours post-ingestion (Tmax ~1–2 hrs). Oligomeric and polymeric procyanidins have very low direct oral bioavailability due to large molecular size and poor intestinal absorption; they are extensively metabolized by colonic microbiota into smaller phenolic acids (δ-(3,4-dihydroxyphenyl)-γ-valerolactone, hydroxyphenylvaleric acids, hydroxyphenylpropionic acids, and hydroxybenzoic acids), which are the primary systemically circulating bioactive metabolites. Phenolic acid components (caffeic acid, ferulic acid) are relatively well absorbed in the upper GI tract. Plasma concentrations of intact procyanidins remain very low (<nM range), while microbial metabolites reach low µM concentrations. Protein binding of polyphenolic components is high, and enterohepatic recirculation may extend biological activity. Co-ingestion with food may modestly alter absorption kinetics but does not substantially change overall metabolite profiles.
Pycnogenol's procyanidins and phenolic acids enhance endothelial nitric oxide synthase activity, increasing nitric oxide production for improved vascular function. The extract inhibits inflammatory enzymes like cyclooxygenase and lipoxygenase while scavenging free radicals. It also binds to collagen and elastin fibers, protecting vascular integrity and skin elasticity.
Pycnogenol is considered one of the most extensively researched herbal supplement preparations with over 160 published studies. Clinical trials have examined dosages typically ranging from 50-200mg daily for various health outcomes. While the research base is substantial, the provided data sources do not detail specific clinical endpoints or effect sizes. Additional peer-reviewed sources would be needed to substantiate specific health benefit claims and quantify therapeutic outcomes.
Pycnogenol is generally well-tolerated with mild side effects including gastrointestinal upset, headache, or dizziness reported in some users. It may enhance the effects of blood-thinning medications due to its impact on platelet function and circulation. Individuals taking anticoagulant drugs should consult healthcare providers before use. Safety during pregnancy and lactation has not been established, so use should be avoided during these periods.
