I was told by my neurologist that SERB, in France, would only make the drug Mysoline using the correct compound if it could change the name to Primidone. I have researched on the internet and found this to be true. I ask my pharmacist every time I collect my prescription for Primidone 'Is it Mysoline', but I am never convinced, which I would be if I received the medication in a SERB branded box. I would add I had a grand mal attack last year as I had been given the generic mysoline and taken to hospital. My neurologist put me back on BRANDED mysoline.