A Patient Has Been Taking Levothyroxine ( Synthroid ) for More

A patient has been taking levothyroxine ( Synthroid ) for more than 1 decade for primary hypothyroidism. Today she calls because she has a cousin who can get her the same medication in a generic form from a pharmaceutical supply company. Which is the nurse's best advice?

A) "This would be a great way to save money."
B) "There's no difference in brands of this medication."
C) "This should never be done; once you start with a certain brand, you must stay with it."
D) "It's better not to switch brands unless we check with your doctor."