The present invention relates to homogeneous formulations comprising omega-3 polyunsaturated fatty acids (n-3 PUFA) and resveratrol for oral administration, in which the resveratrol is solubilized in a solvent system consisting of omega-3 polyunsaturated fatty acids (n-3 PUFA), or their alkyl esters, and a ionic emulsifier. The composition according to the present invention can be formulated as food or nutritional supplement or medicament in the prevention or treatment of cardiovascular diseases due to lipid metabolism disorders and increased platelets aggregation, as well as damages due to free radicals and/or viral diseases.