MAXIMUM STRENGTH MUCINEX CHEST CONGESTION MEDICINE: Clinically proven to last up to 12 hours and provide relief for your severe chest congestion and make cough more productive congestion POWERFUL SYMPTOM RELIEF: Maximum Strength Mucinex 12 hour relieves chest congestion and thins and loosens mucus BI-LAYER TABLET: A unique bi-layer tablet, one layer for immediate release and one layer for extended release so the medicine starts to release right away and last for up to 12 hours TRUSTED COLD and COUGH BRAND: Mucinex is the Cold and Cough brand doctors trust and Pharmacist Recommended Brand CONTINUOUS RELIEF: Maximum strength Mucinex lasts up to 12 hours so you can say goodbye to retaking medicine every 4 hours ACTIVE INGREDIENT: Contains Guaifenesin which is an expectorant that relieves chest congestion and thins and loosens mucus making cough more productive USAGE: Use as directed; Adults and Children 12 years of age and over