The best natural anti-histamine out there which your body will love is none other than Vitamin C. Increase your Vitamin C intake. It can be as simple as taking an extra orange or grapefruit. The caution in replenishing the vitamin C through citrus fruit is that you have to learn yours or your child’s tolerance. Too much at once, (due to the high acidic content) could result in an eczema flare up as well. If you need to supplement, make sure it is from organic sources. Your body knows the difference between organic and synthetic vitamin C. Nonetheless, citrus fruit aren’t the only means of supplementing vitamin C; therefore and for those allergic to citrus fruit, individuals need to become familiar with the other vitamin C sources. Vitamin C is the one nutrient that really needs to be supplemented, due to the fact that it is not stored in the body.