Frequently referenced in the National Library of Medicine, research indicates this specific compound demonstrates a unique capability to stimulate endogenous growth hormone pathways without significantly elevating cortisol or prolactin levels
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1 Introduction There are many pine bark extracts on the market, from different pine tree species, from different countries and with different levels of efficacy for human health ( French maritime pine bark extract (Horphag Research) is the most researched pine bark extract with over 450 published studies and over 160 human clinical trials, including over 12.000 subjects ( The French maritime pine trees that are used for Pycnogenol grow in Les Landes de Gascogne, along the coast of southwest France ( Pycnogenol was found to contain mainly procyanidins, their monomers catechin and epicatechin, taxifolin as well as phenolic acids ( is standardized to 70 5% and thus meets the specifications for maritime pine extract, described in the United States Pharmacopeia (USP) ( , taxifolin, catechin, caffeic acid, ferulic acid and metabolite 1 [-(3,4-dihydroxy-phenyl)--valerolactone] have been detected in the blood plasma of volunteers ( Clinical research on Pycnogenol started over 40 years ago and various health benefits of Pycnogenol have been observed and investigated

J Exp Bot 63:12411250 Ayala MB, Sandmann G (1988) Activities of copper containing proteins in copper depleted pea leaves