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The aim of this study was to evaluate the effects of Eminol®, the polyphenol-rich grape extract supplement (700 mg), on cardiovascular risk and oxidant stress indicators in a sample of volunteers. A randomized, double-blind, placebo-controlled clinical trial was performed over 56 days and included 60 volunteers. Thirty volunteers took 700 mg of the grape extract, Eminol® (E), and 30 took the placebo (P). On comparison of the results, a decrease in total cholesterol (E: 213.77 ± 4.1 mg/dl and P: 245.57 ± 4.1 mg/dl; p = 0.01) and LDL cholesterol (E: 142.17 ± 3.1 mg/dl and P: 165.13 ± 3.1 mg/dl; p = 0.02) levels as well as an increase in antioxidant capacity (E: 65.63 ± 5.8 μmol TE/mg and P: 57.80 ± 7.7 μmol TE/mg; p < 0.01) and vitamin E (E: 11.46 ± 0.5 μg/ml and P: 9.06 ± 0.5 μg/ml; p = 0.018) was observed. This result indicates that the grape extract Eminol® modulated the lipid profile in terms of cardiovascular risk indicators, lowering total blood cholesterol and LDL cholesterol levels.