Dry coughs can be super irritating because they do not remove mucus, sputum, phlegms and other irritants from your respiratory pathways effectively. They can linger for days after recovering from influenza and their underlying causes are varied, including asthma and environmental irritants. The best home remedy for dry cough would be to sip hot beverages constantly throughout the day, (masala chai lovers would embrace this), and include the following herbs: Turmeric Ginger Marshmallow root Peppermint tea Masala chai