Can "the flu" be added to acceptable answers?
It's common usage to attach "the" to "flu".
Also, I think "the" can be omitted from "medicine".
Agree, i submitted that the translation to move "the" article to the flu.
I would say move the article "the" from medicine to flu.
Either "she has the medicine to treat flu" or "she has medicine to treat the flu" are possible and acceptable in English.