Buckeye's
right. Keppra was introduced as an adjunct med. And, in general, most doctors shoot for MONOTHERAPY. That is, using only one drug. But, it also depends on the type of seizures, when they were diagnosed (childhood vs adulthood), weight, and several other things.
For example, in my case. I have tonic clonics. And I've gone through just about EVERY med possible. Right now, I'm on Carbatrol--for the seizures--400 mg morning and evening; AND I take Topamax--but it's intended use is for migraine control. It ALSO has a side effect of seizure control, but when you check my blood levels, it falls WAY below the therapeutic range. I'm ALSO on Clonazepam--and just started this about 6 weeks ago--to help with sleep. It also has the side effect of helping with myoclonic seizures (twitches, jerking).
Technically, my doctor lists me as being on MONOTHERAPY. But, that could be debatable, if you ask me.
What I'm shooting for here is to say that everyone's body is different. While my body may take a lower dosage of one medicine (Carbatrol), it may take a much higher dosage (it took 1500 mg of DEPAKOTE ER) of another drug to control the same type of seizure. We all react differently to different drugs. It would be NICE if we all had the same standard response...but NOOOOO, we're NOT going to get THAT LUCKY.