There has been growing interest in the use of cannabis-based products for the treatment of a wide range of diseases, including epilepsy. A number of studies were published during the last 5 years demonstrating efficacy of purified CBD for the control of a large spectrum of seizure-types, particularly those observed in severe childhood epilepsies, such as Lennox- Gastaut and Dravet syndromes. This book, co-authored by leaders in the field of epileptology, critically reviews recent data from clinical trials. Authors discuss issues related to pharmacology, drug interactions, efficacy, potential adverse events and long-term effects on development and behaviour. Child and adult neurologists and all clinicians contributing to epilepsy care will find useful information on the best practices, when using purified CBD for the treatment of drug-resistant epilepsies.