Mucinex DM extended-release tablets will help you controlyour dry cough for 12 hours! It helps quiet wet and dry coughs. Only Mucinex DMhas a bi-layer tablet with maximum-strength medicines to fight wet coughscaused by mucus as well as irritating dry coughs. The first layer is absorbedquickly by your body for fast relief. The other layer dissolves slowly tocontinue relieving your wet or dry cough. Mucinex products all have thedependable, mucus-busting power to show Mr. Mucus the way out of your system soyou can keep up with life.