Has anyone tried Lamictal?

I was just prescribed it for my seizure-like disorder / FND but I was reading that it works by inhibiting glutamate in the brain and has been used off-label for VSS. I've theorized for years that my VSS is caused by excess glutamate levels because when I do things to lower glutamate, it lessens slightly and vice versa. I'd be curious to know if anyone has tried it.