I looked it up and it says it is the drug called Acrivastine with the usual decongestant in it. I got very intrigued, but since I have high blood pressure I can't take anything with decongestants in it. I rotate between the big 3--allegra, zyrtec and claratin. I have to keep switching because they get to where they stop working after a while. It is always so good to hear that a medication is actually working for someone! God bless..