my 16month old baby started having catarrh since he was 7 month, haved used slot of cold drops, sometime it will go and come back, but now for the past 10 days he uses is mouth to breath, catarrh is not coming out but his nose is blocked, I bought an antibiotic drug(zinnat) and paracetamol and cold syrub. but I don t know if there is something else I should do. thank you