Maximum Strength Mucinex Sinus-Max Severe Congestion & Pain is an OTC medicine for relief of your Nasal and Chest Congestion symptoms. Maximum Strength Mucinex Sinus-Max Severe Congestion & Pain helps relieve pain, headache, nasal congestion, sinus congestion and chest congestion. Mucinex is the #1 Cold and Cough brand doctors trust for themselves and their families*. This product contains 20 Caplets. It can be used by Adults and Children 12 years of age and over.