Clinical Trials

Inclusion Criteria:

* Participant must be ≥12 years of age at the time of signing informed consent
* Participant must have a study caregiver ≥18 years of age at the time of signing the informed consent; the study caregiver(s) must be able to recognize and observe the participant's seizures
* Participants with an established diagnosis of focal or generalized epilepsy or combined focal and generalized epilepsy with a documented history of stereotypical episodes of prolonged seizures that includes at least 1 of the following:

1. Generalized seizure episodes starting with a flurry of absence seizures or myoclonic seizures with a minimum total duration of 5 minutes
2. Episodes of a focal seizure with a minimum duration of 3 minutes
3. Episodes of a focal seizure or a flurry of myoclonic seizures for at least 90 seconds followed by a generalized/bilateral tonic-clonic seizure with a minimum total duration of 3 minutes
* Prior to the Screening Visit, participant completed a study using Staccato alprazolam (such as EP0162 (NCT05077904), ENGAGE-E-001 (NCT03478982), or UP0100 (NCT04857307))

Exclusion Criteria:

* Participant has a current history of alcohol or drug use disorder, as defined in the Diagnostic and Statistical Manual of Mental Disorders 5, within the previous 1 year
* Participant has a known hypersensitivity to any components of the investigational medicinal product (IMP) or comparable drugs (and/or an investigational device) as stated in this protocol or to albuterol (or similar bronchospasm rescue medication if needed to meet country-specific requirements)
* Participant has a history of convulsive (generalized tonic-clonic) status epilepticus in the 8 weeks prior to the Screening Visit
* Participant has a history or presence of known nonepileptic seizures which cannot be distinguished from qualifying epileptic seizures
* Participant has a clinically significant known airway hypersensitivity (eg, bronchospasm to known allergens, such as pollen, animals, or food) and/or acute respiratory signs/symptoms (eg, shortness of breath, wheezing on lung auscultation). NOTE: Participants with mild asthma who qualify for inclusion in the are allowed to be enrolled even though they have known airway hypersensitivity
* Participant has a clinically significant chronic pulmonary disorder other than mild asthma (eg, chronic obstructive pulmonary disease, restrictive lung diseases [including idiopathic pulmonary fibrosis\]) and/or recent history or presence of hemoptysis or pneumothorax
* Participant has had a positive antigen test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and experienced moderate to severe signs/symptoms of respiratory distress necessitating hospitalization or outpatient treatment such as ambulatory oxygen, extensive treatment with inhaler medications, and/or oral medications for a duration of 4 weeks or more, unless full resolution occurred at least 6 months prior to Screening
* Participant has experienced a severe upper respiratory tract infection within 4 weeks or severe bronchitis/pneumonia within 3 months before the Screening Visit
* Participant has a history or presence of acute narrow-angle glaucoma
* Participant has a condition for which oral alprazolam is contraindicated as per the regional labeling
* Participant is taking any drug that is a strong CYP3A4 inhibitor, including azole antifungal agents (ketoconazole and itraconazole) and nefazodone
* Participant is taking any opioids or sedative hypnotics on a chronic basis
* Participant is taking nonselective beta blockers on a chronic basis

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 03/25/2026. Questions regarding updates should be directed to the study team contact.