A 55-year-old man who has a history of ischaemic heart disease presents with myalgia. His long-term medications include aspirin, simvastatin and atenolol. Given his statin use a creatine kinase is measured and reported as follows:
Creatine kinase 1,420 u/l (< 190 u/l)
His problems seem to have followed the prescription of a new medication. Which one of the following is most likely to have caused the elevation in creatine kinase?
Rifampicin
Felodipine
Clarithromycin
Ciprofloxacin
Amitriptyline