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<p>This in-depth review discusses cannabis as it relates to heart transplantation and the growing dilemma of legalization around the world creating disparities in transplant candidacy. One will learn about two of the most common cannabinoids: Δ⁹-tetrahydrocannabinol (THC) and cannabidiol (CBD). These cannabinoids are metabolized by cytochrome P-450 and P glycoprotein, which are essential for the metabolism of drugs for transplantation, such as calcineurin inhibitors. Addiction, withdrawal, and cannabis use disorder will be reviewed as well as hyperemesis syndrome. Maintaining adequate immunosuppression will depend on a variety of factors, including drug-drug interactions, pharmacokinetics of cannabinoids and chronicity of cannabis usage. These drug interactions are further confounded by varying concentrations of cannabis products available at medical dispensaries. One will also learn about the outcomes of transplant recipients using cannabis such as graft failure and the risk of infections. Although more research is needed to establish transplant guidelines, the available data is concerning and fairness in organ distribution should not vary by transplant program or institution.</p>

Publisher: Elsevier PMID: 34006449