Epilepsy Res. 2019 Aug; 154:13-20.

Trial and study design: Interim analysis of long-term efficacy and tolerability 

Sample size: N=152, DS- 58, LGS- 94

Dosage and duration: Highly purified CBD (100 mg/mL) in oral solution at 2-10 mg/kg/day, titrated until tolerability limit or a maximum dose of 25-50 mg/kg/day, Median treatment duration was 78.3 (range, 4.1-146.4) weeks.

Results:

  • At 12 weeks, the proportions of patients with ≥50%, ≥75%, and 100% reductions in major motor seizures were 53%, 23%, and 6%; the proportions with corresponding reductions in total seizures were 46%, 26%, and 5%. Responder rates for both seizure types were consistent through 96 weeks. 

Safety and side effects:

  • CBD had an acceptable safety profile; the most common AEs were somnolence (30%) and diarrhea (24%).

Conclusion:

  • Results from this interim analysis support add-on CBD as an effective long-term treatment option in LGS or DS.