During the day, you have to work. At night, you have to sleep. However, sinus congestion can make both difficult. Thankfully, relief comes in twos. Maximum Strength Mucinex Sinus-Max Severe Congestion Relief keeps your worst day time symptoms in check, acting against sinus pressure, headache and mucus. At night, sinus congestion, a pounding headache, and a runny or stuffy nose may prevent you from sleep. But Maximum Strength Mucinex Sinus-Max Night Time Congestion & Cough relieves your worst sinus congestion symptoms to help you get through the night.