['dravet syndrome', 'seizure disorder']
['zx008 (fenfluramine hydrochloride)', 'matching placebo']

        Key Inclusion Criteria:

          -  Male or non-pregnant, non-lactating female, age 2 to 18 years, inclusive as of the day
             of the Screening Visit.

          -  Clinical diagnosis of Dravet syndrome, where convulsive seizures are not completely
             controlled by current antiepileptic drugs.

          -  Must have a minimum # of convulsive seizures per 4-week period for past 12 weeks prior
             to screening

          -  All medications or interventions for epilepsy must be stable for at least 4 weeks
             prior to screening and expected to remain stable throughout the study.

          -  No cardiovascular or cardiopulmonary abnormality based on ECHO, ECG or physical
             examination

          -  Parent/caregiver is willing and able to be compliant with diary completion, visit
             schedule and study drug accountability.

        Key Exclusion Criteria:

          -  Pulmonary arterial hypertension.

          -  Current or past history of cardiovascular or cerebrovascular disease, such as cardiac
             valvulopathy, myocardial infarction or stroke.

          -  Current or past history of glaucoma.

          -  Moderate or severe hepatic impairment.

          -  Receiving concomitant therapy with: anorectic agents; monoamine-oxidase inhibitors;
             medications that act via serotonin including serotonin reuptake inhibitors;
             atomoxetine, or other centrally-acting noradrenergic agonist; or cyproheptadine.

          -  Currently receiving or has received stiripentol in the past 21 days prior to
             Screening.

          -  Currently taking carbamazepine, oxcarbamazepine, eslicarbazepine, phenobarbital, or
             phenytoin, or has taken any of these within the past 30 days.

          -  Positive result on tetrahydrocannabinol (THC) or cannabidiol (CBD) test at the
             Screening Visit.

          -  A clinically significant medical condition,that would interfere with study
             participation, collection of study data, or pose a risk to the subject.
      