Vimpat never worked for me, but Onfi (Frisium) did, in combination with Tegretol. It should be noted, though, that I have always had really. Bad luck finding a seizure med that worked. The Onfi has been amazing!
So I have been taking Keppra for about a since October 2010. I have had to increase it every now and then; I started out at 500 mg twice a day and am now up to 2,000 mg twice a day. Recently I started having a ton of seizures (I get simple partials). They were a lot different than my normal ones and really wiped me out. I ended up at the ER. My MRI should no changes, so my Keppra dose was raised to 2,000 mg and Vimpat was added. I’m currently at 50 mg. Anyone had this done? So far it is working really well with no side effects.