Professor Morice, the head of cardiovascular and respiratory studies and founding member of the International Society for the Study of Cough, wrote that researchers have gotten results of a recent study of over-the-counter cough medicine that contains cocoa.

A study of 163 people showed that patients saw improvements in two days with the cocoa medicine.

Researchers found that theobromine, an alkaloid in cocoa, is better at suppressing your urge to cough because it’s sticky, which Morice said forms a coating on your throat’s nerve endings.