A Study to Assess the Efficacy, Safety, and Tolerability of Cannabidiol Oral Solution With Vigabatrin as Initial Therapy in Participants With Infantile Spasms

Inclusion Criteria:

1. Parent(s)/caregiver(s) fully comprehends and signs the informed consent form,
understands all study procedures, and can communicate satisfactorily with the
Investigator and study coordinator, in accordance with applicable laws, regulations,
and local requirements.

2. Clinical diagnosis of Infantile Spasms and hypsarrythmia, confirmed by a 9-hour
video-EEG obtained during screening Period and read by the central reader.

3. General good health (defined as the absence of any clinically relevant abnormalities
as determined by the Investigator) based on physical and neurological examinations,
medical history, and clinical laboratory values completed during the Screening Visit
(Visit 1).

4. In the opinion of the investigator, the parent(s)/caregiver(s) is (are) willing and
able to comply with the study procedures and visit schedules.

Exclusion Criteria:

1. Is considered by the investigator, for any reason (including, but not limited to, the
risks described as precautions, warnings, and contraindications in the current version
of the Investigator's Brochure for Cannabidiol Oral Solution) to be an unsuitable
candidate to receive the study drug.

2. Known or suspected allergy to cannabidiol.

3. History of an allergic reaction or a known or suspected sensitivity to any substance
that is contained in the investigational product formulation.

4. Use of any cannabidiol/cannabis product within 30 days of study entry.

5. Patient is diagnosed or suspected of having tuberous sclerosis.

6. Patient has received treatment with either vigabatrin, ACTH, or high-dose steroids
previously.

7. Previous or concomitant therapy with felbamate, clobazam, valproic acid, or the
ketogenic diet.

8. Patient currently on any disallowed CYP3A4-related medication listed in Appendix 1
(phenytoin, fluvoxamine, carbamazepine, and St. John's Wort).

9. Previously received any investigational drug or device or investigational therapy
within 30 days before Screening.

10. Clinically significant abnormal laboratory values, including: liver function tests
(LFTs) such as albumin, direct bilirubin, total bilirubin, aspartate aminotransferase
(AST), and alanine aminotransferase (ALT) ≥3 times the upper limit of normal (ULN).
The investigator may deem the patient eligible if he or she judges the laboratory
values to be not clinically significant.