ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.
Overview
It's a controlled substance.
What it's used for
- Seizures in Lennox-Gastaut syndrome
- Off-label: other epilepsies
How to take it
- Take it as prescribed. Don't stop suddenly.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Sleepiness
- Drooling
- Irritability
- Fever
Call 911Slow, shallow, or stopped breathing, blue lips, or can't be woken up
Call 911A blistering, peeling, or widespread red rash, especially with fever
Call 911Thoughts of suicide or harming yourself. Call or text 988 any time.
Warnings
- Boxed warnings: misuse and dependence; deadly risk with opioids.
Other medicines, foods, and alcohol
- Taking it with opioids, alcohol, or other sedating medicines can slow breathing and cause death.
- It makes hormonal birth control less effective.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Talk with your provider.
Missed doses, overdose, and storage
If you miss a dose
Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Clobazam (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.