A client is prescribed cyclobenzaprine (Flexeril) for the treatment of muscle spasticity associated with multiple sclerosis. Which statement below should the nurse emphasize to the client prior to administration?

A. Monitoring heart rate for bradycardia is not a primary concern with cyclobenzaprine; instead, it can cause drowsiness and sedation. B. Naloxone is not necessary for cyclobenzaprine overdose, as it is not an opioid. C. Cyclobenzaprine can cause sedation and impair cognitive function, so the nurse should emphasize that clients should not operate heavy machinery or motor vehicles until they know how the medication affects them. D. Excessive salivation is not a common side effect of cyclobenzaprine; instead, dry mouth is more frequently reported.