Canadian Medical Association Journal, 13(178), p. 1685-1686
DOI: 10.1503/cmaj.080585
Smoking cannabis for medical purposes has been approved in the absence of strong evidence of its safety and efficacy. • The current review of evidence from clinical trials of cannabinoids and cannabis extracts for medical indications suggests that the adverse effects of their short-term use are modest. • Research is needed to evaluate the adverse effects of longterm use of medical cannabinoids, such as for the treatment of multiple sclerosis and chronic pain.