Each Daytime caplet contains dextromethorphan 15 mg, pseudoephedrine 30 mg, guaifenesin 100 mg and acetaminophen 500 mg. Each Nighttime caplet contains pseudoephedrine 30 mg, acetaminophen 500 mg and diphenhydramine 25 mg. To help relieve cold and flu symptoms such as minor pain, fever, headache, stuffy nose, nasal and chest congestion, cough and sore throat.