For period pain relief, Midol can be taken during menstrual discomfort, and DayQuil and NyQuil help to combat the period. Inadequate sleep, the symptoms of cold and flu such as coughing and congestion are with tea to relieve by DayQuil and NyQuil. They may be taken at different times in general and they are tolerated in the body. At the same time, however, you should pay special attention to the total dose you take because of acetaminophen, which is found in both DayQuil and NyQuil. I propose that you stay away from gluttony and remain alert to your physical state. In case you would like to receive personalized healthcare advice, the most suitable option is to have a conversation with a medical specialist who can offer a customized opinion corresponding to your situation. Be well!