Mucinex 12 Hour Chest Congestion, Maximum Strength, 14 Extended-release Bi-layer Tablets

1,200 mg Guaifenesin Extended-Release Bi-Layer Tablets Expectorant Relieves Chest Congestion Thins and Loosens Mucus Immediate and Extended Release Unique Bi-Layer Tablet Immediate-Release Layer Extended-Release LayerHealth - Hygiene - HomeRelieves chest congestion, thins and loosens mucus for 12 hours. These extended-release bi-layer tablets last for 12 hours.Uses: helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive