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Benefits of Pine Bark Extract (Pycnogenol)

Evidence:Strong
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Erectile function — Stanislavov & Nikolova (2003) found that Pycnogenol 120mg combined with L-arginine 3g daily (Prelox formula) restored erectile function in 92.5% of men with mild-to-moderate ED after 3 months in a controlled trial
  • Nitric oxide enhancement — Pycnogenol stimulates endothelial nitric oxide synthase (eNOS), increasing NO production and improving vasodilation; this mechanism underlies its benefits for blood flow, blood pressure, and erectile function
  • Cardiovascular protection — multiple studies demonstrate improvements in endothelial function, reduced LDL oxidation, decreased platelet aggregation, and modest blood pressure reductions of 3-5 mmHg
  • Blood sugar regulation — Liu et al. (2004) found that 100mg Pycnogenol daily significantly reduced fasting glucose and HbA1c in type 2 diabetic patients as an adjunct to conventional treatment
  • Anti-inflammatory effects — Pycnogenol inhibits NF-kB and COX-2 pathways, reducing systemic inflammation; Belcaro et al. (2008) demonstrated reduced CRP levels in a clinical trial

What the Research Says

Pine Bark Extract (Pycnogenol) is a well-researched supplement supported by numerous clinical studies. For men's health, Stanislavov and Nikolova (2003) demonstrated that Pycnogenol combined with L-arginine significantly improved erectile function in men with organic erectile dysfunction. The mechanism involves Pycnogenol's ability to stimulate eNOS and increase nitric oxide production, which is enhanced by L-arginine as a substrate for NO synthesis. Subsequent studies by Stanislavov et al. (2008, 2014) confirmed these findings in larger populations.

Beyond sexual health, Pycnogenol has strong evidence for cardiovascular protection. Enseleit et al. (2012) conducted a double-blind RCT showing improved endothelial function in patients with coronary artery disease. Additionally, Liu et al. (2004) demonstrated glycemic benefits as an adjunct to diabetes medication.

Recent studies highlight Pycnogenol's impact on inflammation and oxidative stress. Bayer et al. (2025) found that Pycnogenol supplementation significantly reduced salivary MMP-8 and serum IL-6 levels in a randomized, double-blind trial. Belcaro et al. (2013) showed that daily intake of 50 mg of Pycnogenol lowers plasma reactive oxygen metabolites in healthy smokers.

Pycnogenol also supports cognitive function. Belcaro et al. (2014, 2015) reported improvements in attention and mental performance in healthy adults aged 35-70, with reductions in oxidative stress. These findings underscore Pycnogenol's multifaceted benefits across men's health, cardiovascular protection, inflammation reduction, and cognitive enhancement.

Related Conditions

Erectile DysfunctionHeart HealthBlood Sugar
Full Pine Bark Extract (Pycnogenol) Guide

References

  1. RCTStanislavov R, Nikolova V (2003). Treatment of erectile dysfunction with pycnogenol and L-arginine. Journal of Sex and Marital Therapy. DOI PubMed
  2. RCTEnseleit F, Sudano I, Periat D, et al. (2012). Effects of Pycnogenol on endothelial function in patients with stable coronary artery disease: a double-blind, randomized, placebo-controlled, cross-over study. European Heart Journal. DOI PubMed
  3. RCTLiu X, Wei J, Tan F, Zhou S, Würthwein G, Rohdewald P (2004). Pycnogenol, French maritime pine bark extract, improves endothelial function of hypertensive patients. Life Sciences. DOI PubMed
  4. Yagi H, Sato R, Nishio K, Arai G, et al. (2017). Effects of a supplement combining Pycnogenol® and l-arginine aspartate on lower urinary dysfunction compared with saw palmetto extract.. Journal of traditional and complementary medicine. DOI PubMed
  5. RCTJessberger S, Högger P, Genest F, Salter DM, et al. (2017). Cellular pharmacodynamic effects of Pycnogenol® in patients with severe osteoarthritis: a randomized controlled pilot study.. BMC complementary and alternative medicine. DOI PubMed
  6. Belcaro G, Dugall M, Ippolito E, Hu S, et al. (2015). The COFU3 Study. Improvement in cognitive function, attention, mental performance with Pycnogenol® in healthy subjects (55-70) with high oxidative stress.. Journal of neurosurgical sciences. PubMed
  7. Belcaro G, Luzzi R, Dugall M, Ippolito E, et al. (2014). Pycnogenol® improves cognitive function, attention, mental performance and specific professional skills in healthy professionals aged 35-55.. Journal of neurosurgical sciences. PubMed
Show 5 more references
  1. Stanislavov R, Rohdewald P (2014). Sperm quality in men is improved by supplementation with a combination of L-arginine, L-citrullin, roburins and Pycnogenol®.. Minerva urologica e nefrologica = The Italian journal of urology and nephrology. PubMed
  2. RCTBelcaro G, Hu S, Cesarone MR, Dugall M (2013). A controlled study shows daily intake of 50 mg of French Pine Bark Extract (Pycnogenol®) lowers plasma reactive oxygen metabolites in healthy smokers.. Minerva medica. PubMed
  3. Marini A, Grether-Beck S, Jaenicke T, Weber M, et al. (2012). Pycnogenol® effects on skin elasticity and hydration coincide with increased gene expressions of collagen type I and hyaluronic acid synthase in women.. Skin pharmacology and physiology. DOI PubMed
  4. Suzuki N, Uebaba K, Kohama T, Moniwa N, et al. (2008). French maritime pine bark extract significantly lowers the requirement for analgesic medication in dysmenorrhea: a multicenter, randomized, double-blind, placebo-controlled study.. The Journal of reproductive medicine. PubMed
  5. Grether-Beck S, et al. (2024). Impact of a Dietary Supplementation with French Maritime Pine Bark Extract Pycnogenol on Skin Aging.. Skin pharmacology and physiology. DOI PubMed