Cold, Flu & Sore Throat, Maximum Strength Other Information: Each 20 ml contains: sodium 12 mg. Store between 68-77 degrees F (20-25 degrees C). Dosing cup provided. Do not refrigerate. Misc: For ages 12+. Maximum strength (per 4-hour dose). Acetaminophen - pain reliever/fever reducer. Dextromethorphan HBr - cough suppressant. Guaifenesin - expectorant. Phenylephrine HCl - nasal decongestions. Relievers headache, fever & sore throat. Controls cough. Relieves nasal & chest congestion. Thins & loosens mucus. See new information. Parents: Learn about teen medicine abuse. www.StopMedicineAbuse.org. Questions? 1-866-Mucinex (1-866-682-4639). You may also report side effects to this phone number. Health. Hygiene. Home. Please visit our web site www.mucinex.com.