DayQuil is an over-the-counter medication designed to relieve symptoms of the common cold and flu. It typically contains a combination of ingredients such as acetaminophen for pain relief, dextromethorphan to suppress cough, and phenylephrine to reduce nasal congestion. DayQuil is formulated to provide relief without causing drowsiness, making it suitable for daytime use. This medication is available in various forms, including liquid and capsules. It is important to follow the recommended dosage instructions on the packaging and consult a healthcare professional if symptoms persist or worsen. DayQuil is not intended for long-term use and should be used as directed.