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Anticancer Res. 2013 Oct;33(10):4373-80.

Enhancing the activity of cannabidiol and other cannabinoids in vitro through modifications to drug combinations and treatment schedules.

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Dept of Oncology, Division of Clinical Sciences, St. George's, University of London, 2nd Floor, Jenner Wing, London, SW17 0RE, U.K.


Cannabinoids are the bioactive components of the Cannabis plant that display a diverse range of therapeutic qualities. We explored the activity of six cannabinoids, used both alone and in combination in leukaemic cells. Cannabinoids were cytostatic and caused a simultaneous arrest at all phases of the cell cycle. Re-culturing pre-treated cells in drug-free medium resulted in dramatic reductions in cell viability. Furthermore, combining cannabinoids was not antagonistic. We suggest that the activities of some cannabinoids are influenced by treatment schedules; therefore, it is important to carefully select the most appropriate strategy in order to maximise their efficacy.


Cannabinoids; drug combination; drug schedule; leukaemia

[Indexed for MEDLINE]

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