How Postnasal drip affects your Voice

Postnasal drip is the mucus that runs down the back of the throat from the nose. Mucus is produced throughout the nose, throat, and respiratory tract, with a significant portion generated in the nose and sinuses. The body produces around 1-1.5 liters of mucus per day, and much of it flows down the back of the nose into the throat, where it is swallowed.