A nurse is caring for a client who is taking fluphenazine and is experiencing tardive dyskinesia. Which of the following medications should the nurse anticipate the provider to prescribe for this client?

A. Fluoxetine. Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) used to treat depression, anxiety, and obsessive-compulsive disorder. It does not alleviate tardive dyskinesia symptoms and is not indicated for managing extrapyramidal side effects. B. Diphenhydramine. Diphenhydramine is an antihistamine that can help with acute dystonic reactions due to its anticholinergic effects, but it does not treat tardive dyskinesia. Long-term use may even worsen movement disorders. C. Naloxone. Naloxone is an opioid antagonist used to reverse opioid overdose. It has no effect on tardive dyskinesia, as this condition is related to prolonged dopamine receptor blockade rather than opioid activity. D. Valbenazine. Valbenazine is a vesicular monoamine transporter 2 (VMAT2) inhibitor specifically approved for the treatment of tardive dyskinesia. It helps regulate dopamine release and reduces involuntary movements associated with the condition.