CoughGo Forte contains the active substance dextromethorphan hydrobromide which is used as a suppressant of non-productive cough. It has a central action on the cough centre in the medulla and is also an antagonist of N-methyl-D-aspartate (NMDA) receptors. Although structurally related to morphine, dextromethorphan has no classical analgesic properties but a little sedative activity.