The term allergy is used to describe a response, within the body, to a substance, which is not necessarily harmful in itself, but results in an immune response and a reaction that causes symptoms and disease in a predisposed person, which in turn can cause inconvenience, or a great deal of misery. An allergic reaction is a physiologic response by our body against: something we have swallowed; something we have inhaled; something which has touched our skin; or, something injected into us by a bite, a sting from an insect, or by a syringe needle. Nuutrovita.com Offers a wide variety of top brands Allergy releif products.