In seizure-free patients with epilepsy, the question of whether, and if so when, it is acceptable to withdraw treatment may be difficult to answer. A thorough risk-benefit assessment should be undertaken with the patient and next of kin, during which the consequences of a relapse must be weighed against the disadvantages of continued administration of the drug. As a main rule, adult patients should have been seizure-free for at least two years before discontinuation is considered. In children with epilepsy with a known good prognosis, discontinuation may be considered even earlier.