Other Information: Store between 68-77 degrees F (20-25 degrees C). Misc: For ages 12+. Acetaminophen - Pain reliever/fever reducer. Dextromethorphan HBr - Cough suppressant. Guaifenesin - Expectorant. Phenylephrine HCl - Nasal decongestant. All in One (Helps to relieve these symptoms day or night): sore throat; chest congestion; sinus pressure; sinus congestion; headache; fever; cough; nasal congestion; body pain. Maximum strength per 4-hour dose. Parents: Learn about teen medicine abuse. www.StopMedicineAbuse.org. www.mucinex.com. Questions? 1-866-Mucinex (1-866-682-4639). You may also report side effects to this phone number. Made in England.