proanthrocyanadins (prō·anˑ·thrō·sī·anˑ··dēnz), antioxidants found in grape seeds, red wine, and maritime pine bark. Has been used in treating venous insufficiency, post-surgical edema, postinjury edema, atherosclerosis, asthma, cirrhosis, smoking-related platelet aggregation, and reduction of cholesterol levels. No known precautions. Also called
PCOs or
procyanidolic oligomers. See also pycnogenol.
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Pycnogenol contains Proanthrocyanadins, antioxidants that protect blood vessels against the damaging effects of free radicals produced within the body.