Other Information: Each 20 mL contains: sodium 16 mg. Store at 68 degrees - 77 degrees F (20 degrees - 25 degrees C). Do not refrigerate. Misc: For ages 12+. Acetaminophen - Pain reliever/fever reducer. Dextromethorphan HBr - Cough suppressant. Phenylephrine HCl - Nasal decongestant. Triprolidine HCl - Antihistamine. Maximum strength per 4-hour dose. Night time relief for a better morning. Cough; fever; sore throat; runny nose; sneezing; nasal congestion. Health. Hygiene. Home. Parents: Learn more about teen medicine abuse. www.StopMedicineAbuse.org. Please visit our website www.mucinex.com. Questions? 1-866-Mucinex (1-888-682-4639). You may also report side effects to this phone number.