Rufinamide (Banzel) is an expensive drug used to control seizures caused by a certain type of epilepsy called Lennox-Gastaut syndrome. This drug is less popular than comparable drugs. It is available in generic and brand versions. It is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. Get Rufinamide for as low as $117.20, which is 97% off the average retail price of $3,534.75 for the most common version, by using a GoodRx coupon.