Gabapentin is a new antiepileptic drug for add-on therapy in patients
above the age of 12 years with otherwise refractory partial seizures.
Its unknown molecular mode of action is probably related to binding si
tes in the brain. There are no hints to toxicologic effects or damage
of the hematopoetic system, liver, or kidney in man. With the exceptio
n of a rather short elimination half life, the pharmacokinetic data ar
e very favourable. Due to a lack of protein binding and metabolization
there is no danger of major interactions with antiepileptic or other
drugs. Efficacy has been demonstrated in three multicenter placebo-con
trolled trials involving a total of 705 patients. Secondarily generali
zed seizures seem to be the most Likely to respond to 900-1800 mg/day,
followed by complex partial and simple partial seizures. Tolerability
is good and serious side effects have not been observed up to now.