How To Treat Allergy Caused By Parthenium?

I am 59 years old woman living in Chandigarh. Since Nov-06, I am suffering from allergy of 'Congress grass'. Every summer, the allergy aggrevates. I have visited your clinic somewhere around in May-07. You have prescribed me some medicines & a lotion (Cala's). It was so effective that within a month, the allergy reduced. You have advised me to continue medicines (especially in summer).
Unfortunately, I lost the presciption. It would be of great help, if you can mail me the name of medicine at my son id YYYY@YYYY