Have COPD.  Also have Post Nasal drip and continuous running nose while chewing food. Then throat clogging up with phlegm while sleeping.  Taking Glevo 500 once daily,  Nebulizing with Duolin & Budecort 1/3rd repsule each once in the morning, and then again only Duolin 1/3rd repsule at night, Taking Montair LC tablet alternate days (helpful to an extent). Can any nose drop such as ipratropium bromide or anything else may be recommended alongside existing medicines ? ( MAIN problems : throat clogging up with phlegm while sleeping (post nasal drip),  running nose while chewing food, slight wheezing at times or obstructive rattli.ng sound at times) . Please suggest.