It also contains an expectorant to help loosen and thin mucus in the chest ... for extended-release tablets if you prefer to avoid the often unpleasant taste of liquid cold medicines.

If you’ve ever been diagnosed with the common cold or bronchitis, you’ve likely experienced chest congestion. Chest congestion is the result of inflamed air passages, or bronchi, in the lungs.

When you need some help shaking that chest congestion ... Both Mucinex and Mucinex DM are available as tablets you take by mouth. You can take one or two tablets of either drug every 12 hours.