An epilepsy patient who's been forced to change medication says she's 'terrified'.

Medsafe has received reports of complications after Pharmac switched the funded brand of lamotrigine to the lowest grade, in the form of a generic drug called 

So far, three people have died, but it is not yet known if the deaths are linked to the new drug. 

Elmarie Bezuidenhout told Andrew Dickens she's had sleepless nights thinking about it.

"It might not work for me. If I have a epileptic attack, I'll be without a driver's license. I could have it while I'm driving, and my car might go smack bang into somebody's car and kill people."

Medsafe says changes to the lamotrigine drug must be carefully managed.