Top Quality Allergy Brand Drugs
Allergy is a reaction of the human defense system against substances which do not commonly cause troubles, and which are normally tolerated by most of the people. When a virus or a bacteria enters the body, this produces defense ANTIBODIES, which destroy the invading agent. In the case of allergy, something similar happens, but antibodies are produced against a normally harmless (pollen, food, …) substance, which is called allergen.
The reaction allergen-antibody is responsible for symptoms, which depend on the part of the body where this reaction takes place (coughing, wheezing, sneezing, hives, etc.) But these symptoms will not appear until the level of antibodies (and hence, the severity of the reaction) exceeds the individual level of tolerance.
Allergic reactions are caused by substances in the environment known as allergens. Almost anything can be an allergen for someone. Allergens contain protein, which is often regarded as a constituent of the food we we eat. In fact it is an organic compound, containing hydrogen, oxygen and nitrogen, which form an important part of living organisms.