TheraRadar
Data updated: Jun 17, 2026

CLOBAZAM

Cytochrome P450 2D6 Inhibitors
CNS Approved 2018-10-22

Clobazam oral suspension is indicated for the adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS) in patients 2 years of age or older.

Source: FDA Label • CHARTWELL MOLECULAR
18
Indications
--
Phase 3 Trials
7
Years on Market

CLOBAZAM Approval History

2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
170 FDA actions from 2018 to 2025
Feb 2025 SUPPL
Label · Labeling
Sep 2024 SUPPL
Label · Labeling
Sep 2024 SUPPL
Label · Labeling

What CLOBAZAM Treats

18 FDA approvals

Originally approved for its first indication in 2018 . Covers 18 distinct patient populations.

  • Other (18)

CLOBAZAM Boxed Warning

RISKS FROM CONCOMITANT USE WITH OPIOIDS; ABUSE, MISUSE, AND ADDICTION; and DEPENDENCE AND WITHDRAWAL REACTIONS Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing of these drugs for patients for whom alternative treatment options are inadequate. Limit dosages and durations to the minimum required. Follow patients for signs and symptoms of respiratory depression and sedation [ see Warnings and Pre...

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Clinical Trial Registry

10 trials
Trial Sponsor ID Phase Status Title
NCT02565108 results posted GWEP1428 Blinded Phase 2014-002942-33 Ph 2 completed A Randomized Controlled Trial to Investigate Possible Drug-drug Interactions Between Clobazam and Cannabidiol
NCT02564952 results posted GWEP1428 Open-Label Extension 2014-002942-33 Ph 2 completed An Open-label Extension Study to Investigate Possible Drug-drug Interactions Between Clobazam and Cannabidiol
NCT03371836 results posted onfi90037 Ph 4 completed Use of Clobazam for Epilepsy and Anxiety
NCT02134366 EPC-1 Ph 3 terminated Clobazam Use in Epilepsia Partialis Continua - Pilot Study
NCT02374567 GAP GAP-2014 Ph 3 terminated Pharmacovigilance in Gerontopsychiatric Patients
NCT02187809 results posted 14362B Ph 3 terminated Safety and Tolerability of Clobazam as Adjunctive Therapy in Paediatric Patients Aged ≥1 to ≤16 Years With Dravet Syndrome
NCT01179828 Predictio KEK 213/09 grant: SPUM no. 33CM30_124117 Ph 3 completed Linking Altered Central Pain Processing and Genetic Polymorphism to Drug Efficacy in Chronic Low Back Pain (Predictio)
NCT02174094 14362A Ph 3 withdrawn Clobazam as Adjunctive Therapy in Paediatric Patients Aged ≥1 to ≤16 Years With Dravet Syndrome
NCT01291316 GABA-SPUM Ph 1, Ph 2 completed GABAergic Modulation in Pain Transmission in Human: Effect of the GABAA Agonist Clobazam on Peripheral and Central Sensitisation
NCT01011036 152/09 SNF SPUM no.33CM30_124117 Ph 3 completed Effects of GABA-a-Agonists on Pain Mechanisms: An Experimental Study in Healthy Volunteers
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

CLOBAZAM FDA Label Details

Indications & Usage

Clobazam oral suspension is indicated for the adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS) in patients 2 years of age or older. Clobazam oral suspension is a benzodiazepine indicated for adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS) in patients 2 years of age or older

⚠️ BOXED WARNING

WARNING: RISKS FROM CONCOMITANT USE WITH OPIOIDS; ABUSE, MISUSE, AND ADDICTION; and DEPENDENCE AND WITHDRAWAL REACTIONS Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing of these drugs for patients...

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SYMPAZAN

Full clinical data, patents, trials, and competitive landscape for clobazam.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.