Seizure disorders:

Indications for BANZEL:

Adjunctive treatment of seizures in Lennox-Gastaut syndrome.


Take with food in 2 equally divided doses. ≥17yrs: initially 400–800mg per day; increase by 400–800mg/day every other day up to max 3200mg/day. Avoid abrupt cessation (reduce dose by 25% every 2 days).


<1yrs: not established. Take with food in 2 equally divided doses. 1–<17yrs: initially 10mg/kg per day; increase every other day by 10mg/kg up to max 45mg/kg per day or 3200mg/day (whichever is less). Avoid abrupt cessation (reduce dose by 25% every 2 days).


Familial short QT syndrome.


Increased risk of suicidal thoughts or behavior; monitor for new or worsening of depression, suicidal thoughts, or unusual changes. Severe hepatic impairment: not recommended. Mild to moderate hepatic impairment. Dialysis (may adjust dose). Monitor for multi-organ hypersensitivity reactions; discontinue if suspected. Pregnancy. Nursing mothers.

Pharmacologic Class:



Caution with drugs that shorten QT interval. CNS depression with alcohol, other CNS depressants. Antagonizes carbamazepine, lamotrigine, triazolam. May potentiate phenobarbital, phenytoin. Potentiated by valproate (reduce doses). Antagonized by carbamazepine, phenobarbital, primidone, phenytoin. May affect substrates of CYP3A4, CYP2E1 (monitor). Antagonizes hormonal contraceptives (use additional non-hormonal forms). May be affected by inducers or inhibitors of carboxylesterases.

Adverse Reactions:

Headache, dizziness, fatigue, somnolence, nausea, incoordination, gait disturbances, ataxia, visual disturbances, leukopenia, fever/rash.

How Supplied:

Tabs—120; Susp—460mL (w. adapter & dosing syringe)

Pricing for BANZEL

400mg tablet (Qty: 120)
Appx. price $3110