A nurse is reinforcing teaching for a female client who has multiple sclerosis and a new prescription for dantrolene. Which of the following client statements indicates an understanding of the teaching?

A. Dantrolene is not safe during pregnancy; clients should avoid use if pregnant or planning pregnancy. B. Dantrolene is taken regularly, not just when spasms occur, to reduce muscle spasticity. C. Calcium levels do not need monitoring; instead, liver function tests should be monitored due to the risk of hepatotoxicity. D. The client should notify the provider if there is no improvement within 45 days to 3 months, as this may indicate the medication is ineffective.