A Patient Taking Entacapone (Comtan) for the First Time Calls

Multiple Choice

A patient taking entacapone (Comtan) for the first time calls the clinic to report a dark discoloration of his urine. After listening to the patient, the nurse realizes that what is happening in this situation?

A) This is a harmless effect of the drug.
B) The patient has taken this drug along with red wine or cheese.
C) The patient is having an allergic reaction to the drug.
D) The ordered dose is too high for this patient.