The invention concerns a nutritional or therapeutic agent comprising a molecule mix obtained from Vitis vinifera and Vaccinium angustifolium, comprising:at least 1% of catechins and epicatechins, the percentage being given by weight in relation to the total weight of the mix, preferably at least 5%,at least 5 ppm (parts per million in the mix) of ferulic acid, preferably at least 10 ppm.The invention also relates to the use of this agent due to its effects on cognitive functions in particular.
