A patient has been receiving epoetin alfa (Epogen) for severe iron-deficiency anemia. Today, the ...

A patient has been receiving epoetin alfa
 
  (Epogen) for severe iron-deficiency anemia. Today, the provider changed the order to darbepoetin (Aranesp). The patient questions the nurse, What is the difference in these drugs? Which response by the nurse is correct?
  a. There is no difference in these two drugs.
  b. Aranesp works faster than Epogen to raise your red blood cell count.
  c. Aranesp is given by mouth, so you will not need to have injections.
  d. Aranesp is a longer-acting form, so you will receive fewer injections.