Abstract: This document relates to methods and materials for treating chronic cough, nasal congestion, and/or one or more conditions causing chronic cough and/or nasal congestion (e.g., posterior rhinorrhea, also known as post-nasal drip (PND), and/or rhinitis). For example, this document relates to compositions containing a steroid (e.g., mometasone furoate), an anticholinergic (e.g., ipratropium bromide), and an antihistamine (e.g., diphenhydramine) as well as methods of using such compositions to reduce or eliminate one or more conditions causing chronic cough (e.g., PND and/or rhinitis).