Hello please give me advice. Lockdown!

I feel dryness, cough in my throat all the time ,when I talk more then usual days my voice become harsh  from last 5 months,  last year winter season actually whenever I got cold it won't go away was easily , I have been feeling cough , my nose hole is block one at a time , during night some time i feel congestion in throat , when I use seroflo 250 synchrobreath from cipla I feel relieve in cough but it makes my throat more dry n more congested , I used antibiotic , antiallergic tablets but they don't work out , I had my chest x ray n it was clear with no problem , doctor also take my breathing test but that time i had cold so doctor dint get proper reading , I have to go to spit my cough from mouth frequently , I m feeling no problem in breathing , but this dryness n cough create my day to day life disturb hope u help me , please help me to get some good medicines n treatment to get my throat relieve I don't want to go outside during lockdown