Preliminary efficacy and safety of an oromucosal standardized cannabis extract in chemotherapy-induced nausea and vomiting

  “Despite progress in anti-emetic treatment, many patients still suffer from chemotherapy-induced nausea and vomiting (CINV). This is a pilot, randomized, double-blind, placebo-controlled phase II clinical trial designed to evaluate the tolerability, preliminary efficacy, and pharmacokinetics of an acute dose titration of a whole-plant cannabis-based medicine (CBM) containing delta-9-tetrahydrocannabinol and cannabidiol, taken in conjunction with standard therapies in the control of CINV.”

“Compared with placebo, CBM added to standard antiemetic therapy was well tolerated and provided better protection against delayed CINV. These results should be confirmed in a phase III clinical trial.”

“A systematic review of 30 clinical trials involving orally administered synthetic cannabinoids (nabilone and dronabinol) showed that they were superior to dopamine receptor antagonists in preventing CINV. Both are approved by the US Food and Drug Administration for use in CINV refractory to conventional anti-emetic therapy, but some authors have questioned the appropriateness of orally administered cannabinoids due to the variability in their gastrointestinal absorption, low bioavailability, long half-lives and the difficulties for an adequate self titration of the dose.”

“Animal studies suggest that the combined administration of different cannabinoids may enhance some of the therapeutic effects of delta-9-tetrahydrocannabinol (THC). This might explain why some patients preferred marihuana to synthetic cannabinoids in clinical trials.”

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