Powerful Sinus Relief for Day or Night. NyQuil Sinex Nighttime Sinus Relief LiquiCaps relieves your worst nighttime sinus symptoms-- nasal and sinus congestion, sinus pain and sinus pressure. Non-drowsy DayQuil Sinex LiquiCaps relieves your worst daytime sinus symptoms-- nasal and sinus congestion and sinus pressure.; DayQuil Sinex Sinus Relief LiquiCaps : Temporarily relieves nasal and sinus symptoms including sinus pain, headache, nasal and sinus congestion. Non-drowsy.; NyQuil Sinex Nighttime Sinus Relief LiquiCaps: Temporarily relives nasal and sinus symptoms including sinus pain, headache, nasal and sinus congestion, runny nose and sneezing.; When using DayQuil or NyQuil products, carefully read each label to insure correct dosing. Use as directed. Keep out of reach of children.