I have been having resistant Dry Cough for almost 2 month now, I had this history of Dry Cough. It comes back every now and then, once in a year. Doctor used to give me some medicine called Benocide fort, it worked many a time. There Is term called Esonophil, which gets imbalanced for me. I haven't had a blood test yet, nor I've taken Benocide fort. But no.other medicine is working for me. The cough is so intense that I am getting cramps in my chest now, specially in night and morning.