Please visit our website www.mucinex.com. Made in England Other information: Store between 68-77 degrees F (20-25 degrees C). Misc: Relieves chest congestion. Thins and loosens mucus. Immediate and extended release. Unique Bi-Layer Tablet: immediate release layer; extended release layer. Health. Hygiene. Home. Choose from the Mucinex line of products to treat your symptoms. Mucinex: relieves chest congestion; thins and loosens mucus for 12 hours. Mucinex DM: controls cough; thins and loosens mucus for 12 hours; Mucinex D: clear nasal/sinus congestion; thins loosens mucus for 12 hours. Questions? 1-866-Mucinex (1-866-682-4639). You may also report side effects to this phone number.