The Queen of vitamins if I must say. Aside from protecting us from things such as cardiovascular disease, prenatal health problems, eye disease, and skin wrinkling, it protects our immune system. Vitamin C supports various cellular functions within the innate and adaptive immune system. This vitamin helps stimulate the production and function of different types of white blood cells in our body, which helps our body fight off illnesses. Vitamin C also assists our body in producing antibodies that protect our immune health. Now where exactly can you get this source? Orange juice, kale, mustard spinach, fruits, lemons, Emergen- C packets, vitamin capsules, to name a few.