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Pycnogenol<jats:sup>\u00ae<\/jats:sup> is a proprietary dry extract of the French Maritime pine (<jats:italic>Pinus pinaster<\/jats:italic>) bark with high ability to scavenge free radicals. In the present study we have investigated if Pycnogenol<jats:sup>\u00ae<\/jats:sup> can protect G6PD deficient erythrocytes against haemolytic cell damage. Venous blood samples were obtained from six subject of Mediterranean origin with known G6PD deficiency which was also confirmed with standard techniques. Erythrocyte haemolysis in the presence and absence of Pycnogenol<jats:sup>\u00ae<\/jats:sup> was induced either with tert\u2010butylhydroperoxide (t\u2010BHP) or quinine and the haemoglobin release in the supernatant was determined by recording the optical density at 540 nm in a Shimadzu spectrophotometer. Our results have shown that Pycnogenol<jats:sup>\u00ae<\/jats:sup> has protective action against a Xenobiotic chemical induced haemolysis in G6PD deficient human erythrocytes. 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