Talk to Dermatologist on Severe Allergy And Problem Understanding The Prescription.

My sister is undergoing an allegery course, but after 9 months of course she is now facing the same problem of extreme sneezing again and again. There are still 3 months left in her courses and she is still undergoing the course. This time when I went for the renewal of vaccine from NIH Allergy centre, and told the doctor about the problem she is facing he prescribed some medicine which I took to the nearest medical store but they were unable to understand what it is. If anyone could help me understand what it is, it would be a great help. Also if anyone having an expert opinion on the health problem which I discussed about would be appreciated.