The main difference is that DayQuil is a non-drowsy formula with the decongestant phenylephrine to help treat your cold or flu symptoms during the day, while many NyQuil products contain a sedating antihistamine and can help you sleep at night. In addition, some NyQuil products also contain 10...
For those that like a sensorial experience,DayQuil and NyQuil SEVERE with Vicks VapoCOOL™come with the same flu symptom relief plus a soothing rush of Vicks Vapors. The key is to identify what your flu symptoms are, so you can pick the medicine that will give you the symptom relie...
Influenza A viruses are the most harmful, as they can cause severe disease. Wild aquatic birds are often the hosts for a large variety of influenza A viruses. Sometimes these viruses are transmitted from bird to human and can cause devastating outbreaks. Some of the subtypes of influenza A th...