DayQuil Cold & Flu LiquiCapsâ„¢ comes in a non-drowsy formula so you can get on with your day. When you need fast relief, this powerful, daytime multi-symptom relief medicine treats headache, fever, sore throat, minor aches and pains, nasal congestion, sinus pressure, and cough due to minor throat and bronchial irritation. Active ingredients per dose (2 Liquicaps) for Adults are Acetaminophen 650 mg (pain reliever/fever reducer), Dextromethorphan HBr 20 mg (cough suppressant) and Phenylephrine HCI 10 mg (nasal decongestant).