“…33 At the dose that is appropriate for treatment of epilepsy (approx 4-7 mg/kg daily for adults) the adverse effects of phenytoin are well known, including nausea, dizziness, constipation, mood changes, and blood dyscrasias. However, the doses required to prevent motion sickness would be smaller (previous studies used from 200 mg up to levels used for anticonvulsant treatment) and less frequent, which may be more tolerable.…”