My pulmonologist prescribed 10 mg of Elaval to be taken once a day. Until I picked up this Rx medication, I did not know it was an Anti-depressant. I also noticed that it can treat insomnia and anxiety. I thought he had prescribed it as a Drying Agent as I have chronic Post-nasal drip. I am trying to avoid the Sinus Balloon Dilation that my ENT wants me to have. or, the FESS - - Functional Endoscopic Sinus Surgery. Although both have a 99.2 and 99.3 success rate from a Technical aspect of the procedure, I have found nothing about the Post-nasal Drip being manged, minimized, or reduced. My research has been mostly the website Entellus Medical. Question - - Why would my Pulmonologist prescribe 10 mg of Elaval, an Anti-Depressant?