In Each 20 mL Other Information: Each 20 ml contains: sodium 9 mg. Store between 20-25 degrees C (68-77 degrees F). Do not refrigerate. For ages 12+. Severe congestion & cough. Dextromethorphan HBr - cough suppressant. Guaifenesin - expectorant. Controls cough. Relieves nasal & chest congestion. Thins & loosens mucus. 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. Please visit our website www.mucinex.com. Mucinex Fast-Max Severe Congestion & Cough is now a red liquid.