Home » QAHow Can I Stop Coughing From Post Nasal Drip At Night?ContentsHow long does post-nasal drip cough last?How can I stop post-nasal drip cough?How do you sleep with post-nasal drip?What dries up sinus drainage in throat?How long does post-nasal drip cough last?.How can I stop post-nasal drip cough?How do you sleep with post-nasal drip?What dries up sinus drainage in throat?