When you have an allergic reaction it can be unpleasant, causing a number of symptoms.  This happens when your body is busy trying to fight off what it considers to be a harmful substance. Great in theory, but the symptoms such as sneezing, congestion and hives you experience can leave you feeling unwell.  Zirtek Allergy Relief helps relieve the symptoms of allergies like hayfever, and ones that are more common in winter like house dust and pet allergies.