A client is prescribed an anti-tussive and asks if there is any other medication that may help the cough. Which medication will help thin and expel the client's secretions?

A. Guaifenesin: Guaifenesin is an expectorant that works by increasing the hydration and volume of respiratory secretions, which decreases mucus viscosity and facilitates its clearance through coughing. This action helps thin and loosen mucus in the airways, improving airway patency and patient comfort. It is commonly used in productive coughs associated with upper respiratory tract infections or bronchitis. B. Diphenhydramine: Diphenhydramine is a first-generation antihistamine with anticholinergic and sedative properties. While it can suppress cough through central action, it does not thin mucus or aid in expectoration. It is more appropriate for dry, nonproductive coughs or allergic symptoms. C. Ipratropium: Ipratropium is an anticholinergic bronchodilator used primarily for the management of chronic obstructive pulmonary disease (COPD) or asthma. It reduces bronchoconstriction and secretions in the airway but does not actively thin mucus for expectoration. D. Fluticasone: Fluticasone is an inhaled corticosteroid that decreases airway inflammation. It may reduce cough associated with inflammatory airway conditions, but it does not act as an expectorant and does not directly facilitate mucus clearance.