A client with amyotrophic lateral sclerosis (ALS) has been taking riluzole for two weeks. The nurse notes that the client remains weak with observable muscle atrophy. Which action should the nurse take?

A. Explain that the medication takes several weeks to reverse symptoms: Riluzole does not reverse muscle weakness or atrophy in ALS but may slow disease progression. It is important to set realistic expectations that symptoms may persist despite treatment. B. Document the assessment findings in the electronic health record: Documenting current symptoms is essential for ongoing evaluation of the client’s condition and medication effectiveness. Accurate records help the healthcare provider make informed decisions about treatment adjustments. C. Advise the client to schedule an appointment for liver function tests: Riluzole can cause hepatotoxicity, so monitoring liver enzymes regularly is necessary. However, this action is more appropriate as a routine follow-up rather than an immediate response to persistent weakness and atrophy. D. Withhold the medication until the healthcare provider is notified: Continuing riluzole as prescribed is important since abrupt discontinuation can be harmful. Holding medication without specific instructions from the healthcare provider is not recommended.