“I’m not saying that I know for a fact that cannabidiol does not have any anti-epileptic effects. What I am saying is, I can explain the effects that you’ve observed through elevated blood levels of clobazam,” Groeneveld said.Notably, this new study of focal seizures in adults chose to exclude potential patients who were taking clobazam or similar medications. Additionally, a later study led by neurologists from the Stichting Epilepsie Instellingen Nederland found that while CBD may amplify the effects of clobazam, it appears to also have an anti-seizure effect of its own.
Source: First Trial of Transdermal CBD for Adult Epilepsy Reports Mixed Results | News | Analytical Cannabis