Overdosing of OTC cold and flu remedies is ... some of the same ingredients. For example, if you were to take a multi-symptom medication like NyQuil along with Tylenol (or Tylenol Extra Strength ...
Phenylephrine is widely used in a variety of over-the-counter flu and cold medicines, including popular products such as Benadryl, Advil, and Tylenol. It is also an ingredient in nasal sprays to treat ...