My 5 year old boy has stuffed nose and wet and dry cough which medicines shall I need to give him for this

A. hi first ,I advise to maintain good hydration. give Luke warm water to drink. apply Babyhug rapid relief rub on chest and back of your child which provides instant relief in this. give decocotion of warm water, Tulsi leaves , pinch of salt , ajwain seeds and Turmeric powder , give it in 6 tbsp quantity twice in a day.