4.5 Article

The Role of Cannabis, Cannabidiol and Other Cannabinoids in Chronic Pain. The Perspective of Physicians

Journal

JOURNAL OF NEUROIMMUNE PHARMACOLOGY
Volume 17, Issue 1-2, Pages 318-333

Publisher

SPRINGER
DOI: 10.1007/s11481-021-10010-x

Keywords

Cannabis; Cannabinoids; Cannabidiol; Delta-9-tetrahydrocannabinol; Opioids

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There is a growing interest in medical cannabis and cannabinoids treatments, with increasing research in the field. While medical cannabis plays a significant role in managing chronic pain, the existence of the entourage effect of other cannabis constituents remains controversial. CBD, a emerging cannabinoid, is gaining attention for its potential benefits, but further studies are needed to fully understand its effects.
Currently, there is a renewed interest in treatments with medical cannabis and cannabinoids. Based on an increasing number of publications over the last decades that permitted new insights into mechanisms, efficacy and safety of cannabinoids, the use of cannabinergic medications is authorised in an increasing number of European and non-European countries. The alleviation of chronic, painful conditions is, since thousands of years, one of the primary reasons for the use of cannabis. Depending on the country, a wide range of medicinal cannabis preparations are available:ranging from defined cultivars of medical cannabis, mainly varying in their THC:CBD ratio, that are inhaled or taken as whole plant extracts,to highly purified single cannabinoids, such as delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD),or mixtures of two enriched extracts, standardised to a 1:1 ratio of THC:CBD (nabiximols). Although conflicting opinions continue to exist, the majority of reviews in the past concluded that medical cannabis and cannabinoids play a significant role in the management of pain. Surprisingly, systematic studies to date do not support an entourage effect of the other plant constituents of cannabis (mainly terpenoids) in treatment of chronic pain. An emerging cannabinoid is CBD which is the only cannabinergic medication available at present that does not cause the typical cannabis high; it is not a controlled substance. However, despite years of research, there is either no study or no well-conducted, head-to-head, comparison available between different cannabis cultivars, between pure cannabinoids, and between pure cannabinoids and extracts. It remains unanswered which is the optimal treatment approach.

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