Expectorants are medications that help clear mucus from the airways, making it easier to breathe. They work by thinning and loosening mucus in the lungs and throat, which can be especially helpful during colds or respiratory infections. Common expectorants include guaifenesin, often found in over-the-counter cough syrups. These medications are typically used to relieve coughs associated with conditions like bronchitis or sinusitis. While expectorants can provide relief, it's important to stay hydrated, as drinking water can further help thin mucus. Always consult a healthcare professional before using any medication, especially for children or those with underlying health issues.