Cough preparations are medications designed to relieve coughing and soothe the throat. They can be classified into two main types: antitussives, which suppress the cough reflex, and expectorants, which help loosen mucus in the airways. Common ingredients include dextromethorphan for cough suppression and guaifenesin for mucus relief. These preparations come in various forms, such as syrups, lozenges, and tablets. They are often used to treat symptoms associated with colds, flu, or allergies. It is important to follow dosage instructions and consult a healthcare professional if symptoms persist or worsen.