OTHER NAME(S). 2-[(1R,6R)Methylpropenylcyclohexenyl] pentylbenzene-1 ,3-diol, CBD. . Show More · Read Reviews (47). Cannabidiol, or CBD, is a chemical compound in marijuana with a variety of uses . Here are 7 benefits of CBD oil. A chemical compound found in the cannabis plant, CBD, or cannabidiol, is non- intoxicating and does not cause the noticeable euphoric effects associated with.
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Associate Health Minister Peter Dunne said restrictions would be removed, which means a doctor will now be able to prescribe cannabidiol to patients. On October 17, , cannabidiol became legal for recreational and medical use. Several industrial hemp varieties can be legally cultivated in Western Europe. CBD is classified as a medical product in Sweden. Cannabidiol, in an oral-mucosal spray formulation combined with deltatetrahydrocannabinol, is a product available by prescription only until for relief of severe spasticity due to multiple sclerosis where other anti- spasmodics have not been effective.
Until , products containing cannabidiol marketed for medical purposes were classed as medicines by the UK regulatory body , the Medicines and Healthcare products Regulatory Agency MHRA and could not be marketed without regulatory approval for the medical claims. A literature review indicated that cannabidiol was under basic research to identify its possible neurological effects,  although as of [update] , there was limited high-quality evidence for such effects in people.
From Wikipedia, the free encyclopedia. Not to be confused with Cannabinol or Cannabinodiol. S4 Prescription only UK: Schedule I except Epidiolex, Schedule V. Drug culture Illegal drug trade Psychedelia. Retrieved 28 June Journal of Clinical Pharmacology. Pharmacology and potential therapeutic role in epilepsy and other neuropsychiatric disorders".
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences Review. State of the art and new challenges for therapeutic applications". Implications for Treating Anxiety-Related Disorders". Journal of Natural Products. US Food and Drug Administration. Retrieved 25 June Retrieved 1 November Hard Evidence at Last? Annals of Clinical Psychiatry. A Systematic Review of the Evidence".
British Journal of Clinical Pharmacology. A Comprehensive Update of Evidence and Recommendations". American Journal of Public Health. Cannabis and Cannabinoid Research.
Drug Metabolism and Disposition. Journal of Biological Chemistry. British Journal of Pharmacology. Naunyn-Schmiedeberg's Archives of Pharmacology. Therapeutics and Clinical Risk Management. On the nature of the Beam test". Structure elucidation of four pyrolytic products , doi: An improved synthesis of cannabidiol".
Journal of Experimental Botany. Food and Drug Administration. Retrieved January 2, Trends in Pharmacological Sciences. Department of Agriculture, State of Colorado. Retrieved 14 September Cannabidiol is illegal and always has been". Retrieved December 10, Retrieved 14 May National Conference of State Legislatures.
Retrieved 13 January Retrieved 6 November Retrieved January 3, The Farm Bill. Retrieved January 29, Retrieved December 4, Retrieved June 2, Retrieved 19 October Retrieved 1 January Retrieved 1 February Annales de Toxicologie Analytique in French.
Swedish Medical Products Agency. Retrieved 31 July BBC News - Health. Retrieved 8 February Retrieved May 20, Is Cannabidiol the Answer for Disorders of Motivation? Annual Review of Neuroscience. Williams, Alex October 27, The New York Times.
Articles related to Cannabidiol. Recreational and medical applications rights Industrial applications. Autoflowering cannabis Cannabis indica ruderalis sativa Difference between C. Medical cannabis History Timeline Religious and spiritual use Chalice.
Cannabis in pregnancy Dependence Effects of cannabis Long-term Endocannabinoid system Impaired driving. Adult lifetime use by country Annual use by country. On day 1 and 7, exhaled CO was measured to test smoking status. Sedation, depression, and anxiety were evaluated with the MRS.
At day 7, the anxiety levels for placebo and CBD group did not differ. CBD did not increase depression in contrast to the selective CB1 antagonist rimonabant. CBD might weaken the attentional bias to smoking cues or could have disrupted reconsolidation, thereby destabilizing drug-related memories.
To the best of our knowledge, no acute studies were performed that solely concentrated on CBD glycemic effects. Moreover, the only acute study that also measured CBD effect on appetite was the study we described above, comparing different cannabis strains. Growth hormone and prolactin levels were unchanged. Compared to the healthy individuals, the cortisol levels increased less after TSST in the 32 at-risk individuals.
The CBD group showed less reduced cortisol levels but differences were not significant. Truly chronic studies with CBD are still scarce. Nonetheless, we also included these studies with repeated CBD treatment, because we think that compared to a one-time dose of CBD, repeated CBD regimens add value and knowledge to the field and therefore should be mentioned here.
These results are supported by another study described in the review by Grotenhermen et al. CBD was administered on average with three other drugs, including clobazam The coadministration led to an alteration of blood levels of several antiepileptic drugs.
In the case of clobazam this led to sedation, and its levels were subsequently lowered in the course of the study. A first pilot study in healthy volunteers in by Mincis et al.
Clinical chronic lasting longer than a couple of weeks studies in humans are crucial here but were mostly still lacking at the time of writing this review. They hopefully will shed light on the inconsistencies observerd in animal studies. Chronic studies in humans may, for instance, help to test whether, for example, an anxiolytic effect always prevails after chronic CBD treatment or whether this was an artifact of using different animal models of anxiety or depression.
In a 4-week open trial, CBD was tested on Parkinson's patients with psychotic symptoms. This led to a reduction of their psychotic symptoms. Moreover, no serious side effects or cognitive and motor symptoms were reported.
No adverse effects were observed and her symptoms improved. The same positive outcome was registered in another study described by Bergamaschi et al. The respective treatment was maintained for three additional weeks. This was the case for three patients in the CBD group and five patients in the amisulpride group. CBD treatment was accompanied by a substantial increase in serum anandamide levels, which was significantly associated with clinical improvement, suggesting inhibition of anandamide deactivation via reduced FAAH activity.
In addition, the FAAH substrates palmitoylethanolamide and linoleoyl-ethanolamide both lipid mediators were also elevated in the CBD group. CBD showed less serum prolactin increase predictor of galactorrhoea and sexual dysfunction , fewer extrapyramidal symptoms measured with the Extrapyramidal Symptom Scale, and less weight gain. Moreover, electrocardiograms as well as routine blood parameters were other parameters whose effects were measured but not reported in the study.
CBD better safety profile might improve acute compliance and long-term treatment adherence. A press release by GW Pharmaceuticals of September 15th, , described 88 patients with treatment-resistant schizophrenic psychosis, treated either with CBD in addition to their regular medication or placebo. Important clinical parameters improved in the CBD group and the number of mild side effects was comparable to the placebo group. Moreover, neurological and physiological examinations were performed, which neither showed signs of CBD toxicity nor severe side effects.
The study also illustrated that CBD was well tolerated. CBD in addition to their regular epilepsy medication. Another clinical study lasting at least 3 months with children and young adults with various forms of epilepsy, who were treated with the CBD drug Epidiolex, was presented at the American Academy for Neurology in In a few cases, severe side effects occurred, but it is not clear, if these were caused by Epidiolex.
The largest CBD study conducted thus far was an open-label study with Epidiolex in patients mainly children, the average age of the participants was 11 suffering from severe epilepsy, who could not be treated sufficiently with standard medication. Ten percent of the patients reported side effects tiredness, diarrhea, and exhaustion. After extensive literature study of the available trials performed until September , CBD side effects were generally mild and infrequent.
The only exception seems to be a multicenter open-label study with a total of patients aged 1—30 years, with treatment-resistant epilepsy. This led to a reduction in seizure frequency. It is therefore difficult to put the side effect frequency into perspective. Attributing the side effects to CBD is also not straightforward in severely sick patients. Thus, it is not possible to draw reliable conclusions on the causation of the observed side effects in this study.
This rating instrument comprised the following factors: This assessment instrument analyzes adverse medication effects, including psychic, neurologic, autonomic, and other manifestations. Using various safety outcome variables, clinical tests, and the cannabis side effect inventory, it was shown that there were no differences between the placebo group and the CBD group in the observed side effects. The occurrence of various degrees of GVHD was compared with historical data from patients, who had only received the standard treatment.
This resulted in lower resistin levels compared to baseline. The hormone resistin is associated with obesity and insulin resistance. Compared to baseline, glucose-dependent insulinotropic peptide levels were elevated after CBD treatment.
This incretin hormone is produced in the proximal duodenum by K cells and has insulinotropic and pancreatic b cell preserving effects. CBD was well tolerated in the patients. However, with the comparatively low CBD concentrations used in this phasetrial, no overall improvement of glycemic control was observed.
When weight and appetite were measured as part of a measurement battery for side effects, results were inconclusive. For instance, the study mentioned above, where 23 children with Dravet syndrome were treated, increases as well as decreases in appetite and weight were observed as side effects. However, in the safety analysis group, consisting of subjects, 10 showed decreased weight and 12 had gained weight.
Both these factors were not controlled for in the reviewed studies. This review could substantiate and expand the findings of Bergamaschi et al. First, more studies researching CBD side effects after real chronic administration need to be conducted. Many so-called chronic administration studies, cited here were only a couple of weeks long.
Second, many trials were conducted with a small number of individuals only. To perform a throrough general safety evaluation, more individuals have to be recruited into future clinical trials. Third, several aspects of a toxicological evaluation of a compound such as genotoxicity studies and research evaluating CBD effect on hormones are still scarce.
Especially, chronic studies on CBD effect on, for example, genotoxicity and the immune system are still missing. Last, studies that evaluate whether CBD-drug interactions occur in clinical trials have to be performed. In conclusion, CBD safety profile is already established in a plethora of ways. However, some knowledge gaps detailed above should be closed by additional clinical trials to have a completely well-tested pharmaceutical compound.
The study was commissioned by the European Industrial Hemp Association. EIHA paid nova-Institute for the review.
Iffland K, Grotenhermen F An update on safety and side effects of cannabidiol: National Center for Biotechnology Information , U. Journal List Cannabis Cannabinoid Res v. Published online Jun 1. Find articles by Kerstin Iffland. Find articles by Franjo Grotenhermen. Author information Copyright and License information Disclaimer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article has been cited by other articles in PMC. Relevant Preclinical Studies Before we discuss relevant animal research on CBD possible effects on various parameters, several important differences between route of administration and pharmacokinetics between human and animal studies have to be mentioned. Open in a separate window. The reality is more complex, because CBD is lipophilic and, for example, will consequently accumulate in fat tissue.
These calculations were made with the intention to give the reader an impression and an approximation of the supraphysiological levels used in in vitro studies. CBD-drug interactions Cytochrome Pcomplex enzymes This paragraph describes CBD interaction with general drug -metabolizing enzymes, such as those belonging to the cytochrome P family.
Neurological and neurospychiatric effects Anxiety and depression Some studies indicate that under certain circumstances, CBD acute anxiolytic effects in rats were reversed after repeated day administration of CBD. Psychosis and bipolar disorder Various studies on CBD and psychosis have been conducted.
Addiction CBD, which is nonhedonic, can reduce heroin-seeking behavior after, for example, cue-induced reinstatement. Neuroprotection and neurogenesis There are various mechanisms underlying neuroprotection, for example, energy metabolism whose alteration has been implied in several psychiatric disorders and proper mitochondrial functioning.
Immune system Numerous studies show the CBD immunomodulatory role in various diseases such as multiple sclerosis, arthritis, and diabetes. Cell migration Embryogenesis CBD was shown to be able to influence migratory behavior in cancer, which is also an important aspect of embryogenesis. Cancer Various studies have been performed to study CBD anticancer effects. Food intake and glycemic effects Animal studies summarized by Bergamaschi et al.
Genotoxicity and mutagenicity Jones et al. Acute Clinical Data Bergamaschi et al. Physiological effects In a double-blind, placebo-controlled crossover study, CBD was coadministered with intravenous fentanyl to a total of 17 subjects. Psychosis The review by Bergamaschi et al.
Addiction A case study describes a patient treated for cannabis withdrawal according to the following CBD regimen: Endocrine effects and glycemic including appetite effects To the best of our knowledge, no acute studies were performed that solely concentrated on CBD glycemic effects.
Physiological effects A first pilot study in healthy volunteers in by Mincis et al. Neurological and neuropsychiatric effects Anxiety Clinical chronic lasting longer than a couple of weeks studies in humans are crucial here but were mostly still lacking at the time of writing this review.
Psychosis and bipolar disorder In a 4-week open trial, CBD was tested on Parkinson's patients with psychotic symptoms. Conclusion This review could substantiate and expand the findings of Bergamaschi et al. Safety and side effects of cannabidiol, a Cannabis sativa constituent. Cannabis und Cannabinoide in der Medizin: Cannabidiol exerts sebostatic and antiinflammatory effects on human sebocytes. Controlled clinical trial of cannabidiol in Huntington's disease.
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CBD Oil: A Cure for Depression?
Cannabidiol (CBD) is an active ingredient in cannabis derived from the the World Health Organization, “In humans, CBD exhibits no effects. Cannabidiol (CBD) is a phytocannabinoid discovered in It is one of some identified . The pharmacological effects of CBD have additionally been attributed to PPARγ agonism and intracellular calcium release. Research suggests. Many small-scale studies have looked into the safety of CBD in adults. Researchers have found no significant side effects on the.