Onfi (generic: clobazam) is a prescription medication used to treat seizures associated with Lennox-Gastaut syndrome. Onfi belongs to a group of drugs called benzodiazepines. It works by decreasing the abnormal electrical activity in the brain.

This medication comes in tablet form. It is taken once or twice a day, with or without food.

Common side effects of Onfi include sleepiness, drooling, and constipation.