The best replacement for productive cough is dry cough.

The best alternatives to productive cough are rated as following:
★★★★★  dry cough
★★★★  nonproductive cough
★★★  non productive cough
★★  productive
★★  non-productive cough
★  productive cough
  non productive

Your alternative for productive cough is not listed? Suggest!
Speaking about productive cough, one probably shouldn't forget about green sputum.

Other search terms related to productive cough and their ratings are:
★★★★★ green sputum
★★★ asthma
You have in mind a companion for productive cough and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of productive cough in all years. Click on graph for more.
productive cough
dry cough
nonproductive cough