Hello, I read your message and understood your concern. Brozedex is used for the treatment of thickened mucus cough, cough, and other respiratory conditions. Brozedex contains three active drugs in its package. Bromhexine is a mucolytic agent, guaifenesin is an expectorant drug and terbutaline is a bronchodilator. The expectorant properties of the drugs make you son cough easily but does not stop the coughing. Your son need to cough in order to clear his airways from mucus. Give the appropriate dose one teaspoon thrice daily to see the results. It will work but needs a couple of days for the real improvement to notice. You can run aerosol therapy (inhaler) as it will help too. Wish fast recovery! Dr.Albana