PMID- 33192966 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240330 IS - 1664-2295 (Print) IS - 1664-2295 (Electronic) IS - 1664-2295 (Linking) VI - 11 DP - 2020 TI - Cannabidiol in the Treatment of Epilepsy: A Focused Review of Evidence and Gaps. PG - 531939 LID - 10.3389/fneur.2020.531939 [doi] LID - 531939 AB - Approximately one third of epilepsy patients do not become seizure free with antiseizure medications. This treatment gap motivates research for new therapeutic options, such as cannabidiol (CBD). CBD differs from other cannabis derivatives because of its consistent efficacy and lack of a psychoactive effect. CBD can be recommended as adjunctive therapy in patients with Dravet and Lennox-Gastaut syndromes. The most common adverse effects (AEs) are drowsiness, reduced appetite, diarrhea, and vomiting. Transaminase elevation is the most common AE that leads to CBD discontinuation. Coadministration with valproate may increase the risk of hepatotoxicity. The combination of CBD and clobazam may increase both the effectiveness and the risk of AEs associated with these drugs. The most striking gaps in knowledge are the efficacy and optimal dose of CBD for adults with focal epilepsies, the long-term safety of CBD use, and strategies to improve access to CBD for people living with epilepsy. CI - Copyright (c) 2020 Silva, Del Guerra, de Oliveira Lelis and Pinto. FAU - Silva, Guilherme Diogo AU - Silva GD AD - Department of Neurology, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - Del Guerra, Felipe Borelli AU - Del Guerra FB AD - Department of Neurology, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - de Oliveira Lelis, Maira AU - de Oliveira Lelis M AD - Federal University of Amazonas, Manaus, Brazil. FAU - Pinto, Lecio Figueira AU - Pinto LF AD - Department of Neurology, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil. LA - eng PT - Journal Article PT - Review DEP - 20201019 PL - Switzerland TA - Front Neurol JT - Frontiers in neurology JID - 101546899 PMC - PMC7604476 OTO - NOTNLM OT - cannabidiol OT - efficacy OT - epilepsy OT - evidence OT - gaps OT - review OT - safety EDAT- 2020/11/17 06:00 MHDA- 2020/11/17 06:01 PMCR- 2020/10/19 CRDT- 2020/11/16 08:46 PHST- 2020/02/02 00:00 [received] PHST- 2020/08/17 00:00 [accepted] PHST- 2020/11/16 08:46 [entrez] PHST- 2020/11/17 06:00 [pubmed] PHST- 2020/11/17 06:01 [medline] PHST- 2020/10/19 00:00 [pmc-release] AID - 10.3389/fneur.2020.531939 [doi] PST - epublish SO - Front Neurol. 2020 Oct 19;11:531939. doi: 10.3389/fneur.2020.531939. eCollection 2020.