Some home remedies that may help relieve a persistent cough include: Staying hydrated by drinking plenty of fluids, such as water, broth, or herbal tea Using a humidifier to add moisture to the air Sucking on throat lozenges or hard candy Using a saline nasal spray or a neti pot to clear out mucus from the nasal passages Avoiding irritants such as smoke, pollution, and strong odors Getting plenty of rest and sleep Using over-the-counter cough medicine as directed, if recommended by a doctor If your cough persists or is accompanied by other concerning symptoms, it is important to see a doctor for further evaluation and treatment.