expectoration
"I had severe bronchitis from a sinus infection while traveling.  It was causing me severe pulmonary distress.  I was taking my rescue inhaler every 2 hours.  The doctor in Hungary prescribed acetylcysteine, to help clear the lungs.  My lungs cleared in days.  What a difference!  The only side effect I had was dripping from my nose.  It liquified the mucus there too.  

Usually back home in the US they prescribe steroids (prednisone) and albuterol nebulizer treatments for weeks while the coughing clears.  No more for me."