The Nurse Is Preparing to Administer Methocarbamol (Robaxin)to a Patient

The nurse is preparing to administer methocarbamol (Robaxin) to a patient who is experiencing acute muscle spasms.The nurse notes that the patient's urine has turned black.What will the nurse do?

A) Administer the next dose of methocarbamol since this is a harmless side effect.
B) Contact the provider to discuss changing to cyclobenzaprine (Flexeril) .
C) Obtain an order for a complete blood count to evaluate blood loss.
D) Request an order for liver function tests since this indicates hepatotoxicity.