A client who has been prescribed diphenhydramine for seasonal allergies reports drowsiness and dry mouth. What is the nurse's best response?

A. Adjust the timing of the dose: While adjusting the timing might help the client cope with drowsiness, it does not address the physiological cause or the discomfort of the dry mouth. It also doesn't provide a comprehensive strategy for managing the drug's predictable side effects. The nurse should prioritize symptomatic relief for the side effects. B. Increase fluid intake to counteract dry mouth: Diphenhydramine is a first-generation antihistamine with significant anticholinergic properties, which commonly cause dry mouth and sedation. The nurse should explain that these are expected pharmacological effects. Encouraging fluids and using sugarless candy are appropriate nursing interventions to maintain comfort while the medication works. C. Switch to antibiotics: Antibiotics are indicated for bacterial infections and have no therapeutic effect on seasonal allergies, which are an IgE-mediated hypersensitivity response. Suggesting antibiotics for allergies is medically incorrect and contributes to the global problem of antibiotic resistance. Allergic rhinitis requires antihistamines or corticosteroids. D. Discontinue the medication immediately: Drowsiness and dry mouth are common, non-life-threatening side effects of diphenhydramine and do not usually warrant immediate discontinuation of the therapy. Unless the patient is performing safety-sensitive tasks, the nurse should first provide education on side effect management. Discontinuation should only be done after consulting a provider.