An allergy is the immune system’s excessive sensitivity and over-response to exposure from a normally harmless foreign substance, or allergen, such as plant pollen, house dust mites, animal hair or certain foods. The immune system responds, as if to a real threat, by triggering an immune response or allergic reaction. Allergy is a health problem that is becoming more and more common worldwide. POLLENGUARD™ can help you control your allergies and get your life back.