medical marijuana

Review of systemic and syndromic complications of cannabis use: A review

Author/s: 
Shah, J., Fermo, O.

Purpose of review: Prescribed and non-prescribed cannabis use is common. Providers in specialties treating chronic pain – primary care, pain management, and neurology–will be coming across medical cannabis as a treatment for chronic pain, regardless of whether they are prescribers. It is important to be aware of the systemic and syndromic complications of acute and chronic cannabis use in the differential diagnosis of cardiac, cardiovascular, cerebrovascular, gastrointestinal, and psychiatric disorders.

Recent Findings: Medical cannabis is legal in 36 states. Studies have shown several potentially serious adverse effects associated with cannabis use.

Summary: Cannabis use has the potential to cause several complications that can be easily overlooked without a preexisting high index of suspicion.

Living Systematic Review on Cannabis and Other Plant-Based Treatments for Chronic Pain - Quarterly Progress Report: May 2021

Author/s: 
M. S., Wagner, J., Ahmed, A. Y., Morasco, B., Kansagara, D., Chou, R.

This is the third quarterly progress report for an ongoing living systematic review on
cannabis and other plant-based treatments for chronic pain. The first progress report was
published in January 2021 and the second in March 2021. The draft systematic review was
available for public comment from May 19 through June 15, 2021, on the Agency for Healthcare
Research and Quality (AHRQ) Effective Health Care website. The systematic review synthesizes
evidence on the benefits and harms of plant-based compounds (PBCs), such as cannabinoids and
kratom, used to treat chronic pain, addressing concerns about severe adverse effects, abuse,
misuse, dependence, and addiction.
The purpose of this progress report is to describe the cumulative literature identified thus far.
This report will be periodically updated with new studies as they are published and identified,
culminating in an annual systematic review that provides a synthesis of the accumulated
evidence.

Medical Marijuana, Recreational Cannabis, and Cardiovascular Health A Scientific Statement From the American Heart Association

Author/s: 
Page 2nd, R.L., Allen, L.A., Kloner, K.A., Rana, J.S., Piano, R.S., Morris, A.A., Martel, C.

Cannabis, or marijuana, has potential therapeutic and medicinal properties related to multiple compounds, particularly Δ-9- tetrahydrocannabinol and cannabidiol. Over the past 25 years, attitudes toward cannabis have evolved rapidly, with expanding legalization of medical and recreational use at the state level in the United States and recreational use nationally in Canada and Uruguay. As a result, the consumption of cannabis products is increasing considerably, particularly among youth. Our understanding of the safety and ef cacy of cannabis has been limited by decades of worldwide illegality and continues to be limited in the United States by the ongoing classi cation of cannabis as a Schedule 1 controlled substance. These shifts in cannabis use require clinicians to understand conflicting laws, health implications, and therapeutic possibilities. Cannabis may have therapeutic bene ts, but few are cardiovascular in nature. Conversely, many of the concerning health implications of cannabis include cardiovascular diseases, although they may be mediated by mechanisms of delivery. This statement critically reviews the use of medicinal and recreational cannabis from a clinical but also a policy and public health perspective by evaluating its safety and ef cacy pro le, particularly in relationship to cardiovascular health.

Therapeutic use of cannabis and cannabinoids: an evidence mapping and appraisal of systematic reviews

Author/s: 
Montero-Oleas, N, Arevalo-Rodriguez, I, Nunez-Gonzalez, S, Viteri-Garcia, A, Simancas-Racines, D

Background

Although cannabis and cannabinoids are widely used with therapeutic purposes, their claimed efficacy is highly controversial. For this reason, medical cannabis use is a broad field of research that is rapidly expanding. Our objectives are to identify, characterize, appraise, and organize the current available evidence surrounding therapeutic use of cannabis and cannabinoids, using evidence maps.

Methods

We searched PubMed, EMBASE, The Cochrane Library and CINAHL, to identify systematic reviews (SRs) published from their inception up to December 2017. Two authors assessed eligibility and extracted data independently. We assessed methodological quality of the included SRs using the AMSTAR tool. To illustrate the extent of use of medical cannabis, we organized the results according to identified PICO questions using bubble plots corresponding to different clinical scenarios.

Results

A total of 44 SRs published between 2001 and 2017 were included in this evidence mapping with data from 158 individual studies. We extracted 96 PICO questions in the following medical conditions: multiple sclerosis, movement disorders (e.g. Tourette Syndrome, Parkinson Disease), psychiatry conditions, Alzheimer disease, epilepsy, acute and chronic pain, cancer, neuropathic pain, symptoms related to cancer (e.g. emesis and anorexia related with chemotherapy), rheumatic disorders, HIV-related symptoms, glaucoma, and COPD. The evidence about these conditions is heterogeneous regarding the conclusions and the quality of the individual primary studies. The quality of the SRs was moderate to high according to AMSTAR scores.

Conclusions

Evidence on medical uses of cannabis is broad. However, due to methodological limitations, conclusions were weak in most of the assessed comparisons. Evidence mapping methodology is useful to perform an overview of available research, since it is possible to systematically describe the extent and distribution of evidence, and to organize scattered data.

Clinicians’ Guide to Cannabidiol and Hemp Oils

Author/s: 
VanDolah H.J., Bauer, B.A., Mauck, K.F.

Cannabidiol (CBD) oils are low tetrahydrocannabinol products derived from Cannabis sativa that have become very popular over the past few years. Patients report relief for a variety of conditions, particularly pain, without the intoxicating adverse effects of medical marijuana. In June 2018, the first CBD-based drug, Epidiolex, was approved by the US Food and Drug Administration for treatment of rare, severe epilepsy, further putting the spotlight on CBD and hemp oils. There is a growing body of preclinical and clinical evidence to support use of CBD oils for many conditions, suggesting its potential role as another option for treating challenging chronic pain or opioid addiction. Care must be taken when directing patients toward CBD products because there is little regulation, and studies have found inaccurate labeling of CBD and tetrahydrocannabinol quantities. This article provides an overview of the scientific work on cannabinoids, CBD, and hemp oil and the distinction between marijuana, hemp, and the different components of CBD and hemp oil products. We summarize the current legal status of CBD and hemp oils in the United States and provide a guide to identifying higher-quality products so that clinicians can advise their patients on the safest and most evidence-based formulations. This review is based on a PubMed search using the terms CBD, cannabidiol, hemp oil, and medical marijuana. Articles were screened for relevance, and those with the most up-to-date information were selected for inclusion.

Keywords 

Medical Marijuana Overview: Patient Care Considerations for all Primary Care Physicians

Author/s: 
Douglas, Chad

Objectives:

  • Recognize the difference between recommending and prescribing medication in regard to medical marijuana
  • Summarize components of the Oklahoma Medical Marijuana Rules and Regulations in regard to patient licensing and physician recommendations
  • Recognize that marijuana is still a Schedule I Controlled Dangerous Substance at the Federal level
  • Differentiate the pharmacology and toxicology of the cannabinoids THC and cannabidiol
  • Recognize potential drug-drug interactions of medical marijuana
  • Implement appropriate counseling of patients who are considering or currently using medical marijuana

Lack of evidence for cannabis in adults with chronic neuropathic pain

Author/s: 
McAvoy, Brian R.

Bottom Line:

There was no high-quality evidence for the efficacy of any CBM (herbal cannabis, plant-derived tetrahydrocannabinol (THC) (dronabinol), synthetic THC (nabilone), plant-derived THC/cannabidiol (CBD) com bination) in any condition with chronic neuropathic pain. The studies were two to 26 weeks long and compared an oromucosal spray with a plant-derived combination of THC and CBD (10 studies), a synthetic cannabinoid mimicking THC (nabilone) (two studies), inhaled herbal cannabis (two studies) and plant-derived THC (dronabinol) (two studies) against placebo (15 studies) and an analgesic (dihydrocodeine) (one study). Herbal cannabis was not different from placebo in reducing pain and the number of people who dropped out due to side effects. Some adverse events (particularly somnolence or sedation, confusion, psychosis) might limit the clinical usefulness of cannabis-based medicines.

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