The invention concerns a pet food or a pet supplement comprising a synergistically-effective antioxidant composition comprising an extract of Vitis vinifera and an extract of Vaccinium angustifolium, wherein said composition comprises at least 1 % of catechins and/or epicatechins and at least 5 ppm of ferulic acid. The present invention further relates to the use of a synergistically-effective antioxidant composition as a medicament for pets, in particular in a method for treating a neurodegenerative disorder in a pet.
