About 10,000 people with Epilepsy are being forced to change their medication despite warnings from MedSafe that it could cause them to have seizures.
Pharmac is switching people on anti-epileptic medicines to a generic form of the drug.
But MedSafe says that goes against international guidelines and poses a potentially significant safety issue.
Pharmac is making the move to save $30 million - but Epilepsy New Zealand say it's not worth risking lives.
Guyon Espiner has been investigating Pharmac and filed this report.
