Hi, I am on blood pressure medication metoprolol succ and plendil and I have had this really bad post nasal drip with coughing too. I thought it was the medication. I went off the metoprolol i thought it was that and it was still happening on the other as well. My doctor said it wasnt it. So gave me flixonase to have one spray twice a day and have zeptop as well twice a day morning and then night. This has not helped. I wake during the night with gunk at the back of my throat and still coughing and my nose still drips. I have tried everything. every medication I go on to does this. Help