Other Information: Store between 68-77 degrees F (20-25 degrees C). Avoid excessive heat. Misc: Day time. For ages 12+. Acetaminophen - Pain reliever. Dextromethorphan HBr - Cough suppressant. Phenylephrine HCl - Nasal decongestant. Clears sinus congestions. Relieves headache. Controls cough. Liquid gels (liquid filled capsules). Maximum strength (Per 4-hour dose). Fast dissolving liquid gels! Parents: Learn about teen medicine abuse. www.StopMedicineAbuse.org. Health. Hygiene. Home. www.mucinex.com. Made in China.