I want to thank again all that responded to me about mucus in the throat . I have used your suggestions I drink warm lemon water before bed with a cracker then take guaifenesin at bedtime have my bed raised as I have an adjustable bed . This has helped a lot . During the day I take on guaifenesin also I notice the heaviness in my upper chest is gone also But with allergy season her those purple trees have started it again.