Cannabidiol or CBD Oil: Help, Hope, and Hype for Psychiatric and Neurologic Conditions
JOURNAL OF THE AMERICAN PSYCHIATRIC NURSES ASSOCIATION
Authors: Newton, Marian; Newton, David W.
Abstract
OBJECTIVE:This article presents proven, promising, and potential therapeutic uses for cannabidiol (CBD) in the treatment of psychiatric and neurologic conditions and diseases. It presents popular, but scientifically unproven health and therapeutic claims of CBD supporting the beneficial homeostatic effects of the intrinsic or endogenous cannabinoid system. It includes a review of cannabinoid pharmacology; it compares properties and the legal status of CBD and THC (delta 9-tetrahydrocannabinol) as well as the hemp and marijuana varieties ofCannabis, and it reviews the historic 2018 U.S. Food and Drug Administration approval of Epidiolex, an oral solution of cannabidiol for two rare treatment-resistant childhood epilepsies, as the firstCannabis-derived drug.METHOD:We reviewed literature on cannabidiol, CBD, the endocannabinoid neuropharmacology system, and hemp and marijuana varieties ofCannabis sativa.RESULTS:The proven and promising medical uses and deficiencies of unproven health claims for CBD, legal implications forCannabis-derived drugs, and comparisons of CBD and THC and hemp and marijuana are summarized objectively with pertinent references.CONCLUSION:CBD and CBD and THC combinations have potential to provide safe, effective therapy for several psychiatric and neurologic conditions and diseases. However, such achievement will require a uniform standard of CBD purity and strength, and corroboration from adequately large and rigorously controlled clinical research studies.
Does cannabis alleviate tinnitus? A review of the current literature
LARYNGOSCOPE INVESTIGATIVE OTOLARYNGOLOGY
Authors: Narwani, Vishal; Bourdillon, Alexandra; Nalamada, Keerthana; Manes, R. Peter; Hildrew, Douglas M.
Abstract
Objective(s) Endocannabinoid pathways have been proposed to affect the underlying pathophysiology of tinnitus. The aim of this study is to evaluate the scope and findings of existing literature on the relationship between cannabis and cannabinoid pathways and tinnitus. Methods We conducted a review of animal, clinical and survey studies investigating the relationship between the use of cannabis-derived agents and tinnitus. Using pertinent keywords and MeSH terms on PubMed, relevant studies were identified, yielding four animal studies, two large cross-sectional survey studies, one clinical cross-over study, and one case report. Results Animal studies revealed that cannabinoid receptor expression in the cochlear nucleus varied with tinnitus symptomatology and the use of cannabinoid agents either increased or had no effect on tinnitus-related behavior. Survey studies yielded conflicting results between cannabis use and tinnitus in the general population. Clinical data is largely lacking, although a small cohort study showed a dose-dependent relationship between tetrahydrocannabinol consumption and frequency of tinnitus episodes in patients receiving treatment for cancer. Conclusion While animal studies have revealed that cannabinoid receptors likely have a role in modulating auditory signaling, there is no compelling data either from animal or human studies for the use of cannabinoids to alleviate tinnitus. Further research is necessary to elucidate their precise role to guide development of therapeutic interventions.