7</span> users found this comment helpful.
"I take allergy shots for air and mould.  The shots are marvellous, but occasionally when air and mould allergens are high I get a reaction.  That's when I take Zyrtec.  In couple of days my symptoms lessen, and by the third day they are gone.  Excellent product.  BTW, I have never experienced any negative side effects from Zyrtec."