Even one of my close friend has faced a similar issue. But before switching the medicines, she found it better to consult her doctor once as it was under her Medicare insurance coverage. In my opinion, before switching to other medicines, it is always better to get a consultation of a doctor, which can avoid unwanted risk. Even one can get more info about the insurance plan which covers such medicines and doctor's visits too, by surfing the internet (healthexchangedotcom) or by contacting the insurance broker