Vicks DayQuil is an over-the-counter combination medication product used for the temporary relief of common cold and flu symptoms.
DayQuil's nighttime counterpart, NyQuil, is also available for the relief of cold and flu symptoms during the night.
Additionally, careful note should be taken when purchasing multiple over-the-counter cold and flu medicines because many products may contain the same active ingredient.
A number of studies have found acetaminophen (alone and in combination) to be effective[4][5] and a safe treatment for common cold symptoms such as sore throat and body aches.
Abuse and recreational use of dextromethorphan have been reported with over-the-counter preparations and can cause euphoric and dissociative effects at higher than recommended doses.