From the manufacturer's website:
Maximum Strength Mucinex Fast Max Severe Congestion and Cough Liquid helps relieve severe congestion and cough symptoms with a liquid that combines the mucus busting power of Mucinex and its maximum strength medicines. Mucinex Fast Max Adult Severe Congestion and Cough Liquid contains Dextromethorphan HBr, a cough suppressant, Guaifenesin, an expectorant, and Phenylephrine HCl, a nasal decongestant. Mucinex Fast-Max Severe Congestion & Cough Liquid combines the mucus-busting power of Mucinex and other maximum strength* medicines to control your cough, relieve nasal congestion, and break up and thin the mucus that causes chest congestion.
Warning: See Picture.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
Recommended use: Do not take more than 6 doses in any 24-hour period. Measure only with dosing cup provided. Do not use dosing cup with other products. Dose as follows or as directed by a doctor. ml = milliliter. Adults and Children 12 Years and Older: 20 ml in dosing cup provided every 4 hours. Children Under 12 Years of Age: Do not use.