Check with your pharmacist if you need help selecting a DayQuil or NyQuil product. There are many different versions on the shelves and they can contain different ingredients. Plus, you may not need these multi-ingredient products if you only have a one symptom like a cough or stuffy nose. ...
Ask a doctor or pharmacist before using over-the-counter medicines that may contain ingredients similar to DayQuil Cough.What other drugs will affect DayQuil Cough?Avoid using this medicine with other drugs that cause drowsiness or slow your breathing (such as opioid medicine, a muscle relaxer, ...