<s>[INST] Hi, I haven't been able to lie down for 4 days now with a cough that becomes terribly hacking when I lie down (only 12 hours sleep in the last 4 days). Even stretching my neck or yawning can bring on an attack. I also have a green/black tongue, all over the tongue that lightens when I brush the tongue but doesn't go away. The cough seems to be caused by a circular process of nasal drip down onto inflamed , sore and sensitive lower throat tubes (the bronchial tubes?), which causes a cough, which makes the throat more sore and sensitive for the drip to trigger again. If I do manage to sleep and am woken with a cough I bring up hard to shift green phlemghI also have a blocked nose that doesn't produce anything when I blow my nose. [/INST] HI, thanks for using healthcare magicThe fact that the cough worsens on lying down may imply that there is pooling of secretions.You may need to consider a decongestant, antihistamine and mucolytic.The decongestant would help relieve your nasal symptoms and by reducing the dripping of mucus, help reduce the coughing.Mucolytic would help to break up any mucus so that it can be easily expelled and the anti histamine would also help with the mucus and congestion.These should be available over the counter and may be combination.Examples of oral decongestants are pseudoephedrine and phenylephrine.Examples of mucolytics are guifenesin, bisolvan, mucomystI hope this helps </s>