How is the cold weather and dry cough? What medicine should I take?

You can't take medicine because there are two reasons for this cough. One is the decrease of mineral stocks in the body, which leads to the decrease of cell excitability, and you can cough with a little stimulation. The other is that it is cold, and the human body has to deliberately contract the trachea to keep the water in the lungs, which can also cause cough. So as long as you do the opposite, you can solve the problem.