Question: In a liver transplant patient who is receiving immunosuppression with tacrolimus, which of the following antibiotics markedly increases the levels of the immunosuppressant and should therefore be avoided? 
 Options:  <1> Amoxicillin clavulanic. <2> Ciprofloxacin <3> Erythromycin. <4> Cefuroxime <5> Norfloxacin.
3