I have written about all things dogs — and specifically ... as well as a vitamin E and vitamin C blend that helps support a healthy immune system in puppies, according to Hill’s.

Vitamin C is a powerful antioxidant that plays a crucial role in supporting the immune system, promoting collagen production, ...

Salmon, sardines, UV-exposed mushrooms, fortified milks and eggs are some food sources of vitamin D. If you don’t regularly get enough vitamin D through diet, try 15 minutes of sun exposure a day, or ...