Treatments for post nasal drip coughing are focused on the underlying cause of the ailment and may include medications that thin the mucus, antihistamines, and decongestants and antibiotics that combat bacterial infections, explains WebMD. Steroid medications and saline nasal sprays help treat post nasal drip caused by allergies.
Home remedies to treat coughing caused by post nasal drip include inhaling steam from a kettle or shower or using nasal irrigations to clean out mucus, recommends Harvard Health. Post nasal drip is one of the most common causes of a cough that lingers. Patients should consult with a medical professional if the cough and symptoms of post nasal drip continue.