Nighttime coughing can lead to more than just a poor night’s sleep. Too much coughing at night can actually irritate the airways enough to prolong the reason for the cough. The trick, then, is to manage that nighttime cough to keep it at bay. Start by drinking an herbal tea with honey. Warm liquids break up mucus in the airways. Prop up some pillows to sleep at a slight incline to keep post nasal drip draining. Take a warm shower before bed unless asthma is a problem. Keep a glass of water and some cough drops by the bed to relieve coughing upon awakening. Keep the sheets clean, especially if you also suffer from allergies.
P.S. Call the doctor about a cough that lasts longer than seven days.