The B vitamins are another group of nutrients that can benefit dogs suffering from itchy skin. Biotin (Vitamin B7) is particularly known for its positive effects on skin health and coat quality. It helps to improve moisture retention in the skin and supports the overall metabolism, which is vital for healthy skin generation. Other B vitamins, including B1, B2, and B12, also contribute to a dog’s overall well-being, supporting energy levels and aiding in the repair of tissues. Whole grains, meat, and eggs are excellent sources of B vitamins for dogs.