It's widely recognized that guinea pigs require an additional supply of vitamin C, prompting Nature's Touch to formulate this specialized food. Contained within this food are: Hay, bran, dehydrated alfalfa, puffed wheat enriched with vitamin C, straw, sunflower, wheat, beet pulp, nettle (Urtica dioica L.), dehydrated carrot, birch (Betula L.), and more.