Vitamins can help with allergies. Vitamin C for instance serves as a powerful antioxidant and reduces the severity of allergic reactions as well as helping your body fight off infections. Vitamin C decreases your histamine production which slows down your body’s reaction to environmental triggers. The amount of Vitamin C necessary to boost your immune system varies based on several factors but adult (19+) men and women require 90 mg and 65-75 mg respectively, and young children require 15mgs. Vitamin C is just one available allergy deterrent, consult your primary care physician to find out just how much Vitamin C you need to make a difference, and alternative methods of fighting off annoying allergies.