What is the reason that I was proscribed Pseudoephedrine for a plug up ear. I did some scuba diving and the next day my ear became blocked to the point I could not hear. That night I got some qtips and found I only made it worse and more painful. So a few days later I went to a military hospital where a doctor cleaned my ear out told me to follow up with my primary doctor when I get home and gave me a script for this cold med. I really did not understand why or how I should take this med for my issue. I was planning on reading the label on the box to tell me what to do. The only problem was all it said was to take as directed. I asked the pharmacy how to take it and was told to go back to the ER and talked to the doctor. I did that and he got mad and said we talk about this and I told him that I was sorry but I did not understand as to why or how to take this medicine. He just walk away. My main concern is that in two days I will me spending 15 + hours flying back to the US and don t want any problems. Thanks for your help