This study was published by the National Institutes of Health in 2009. The research was a collaboration between Mount Sinai Hospital in New York and the University Nacional de Educacion a Distancia in Madrid, Spain.
It was an experimental mouse model that found that CBD “specifically attenuated heroin-seeking behavior reinstated by exposure to a conditioned stimulus cue. CBD had a protracted effect with significance evident after 24h and even after 2 weeks of administration…and suggest that CBD may be a potential treatment for heroin craving and relapse.”
The Journal of Neuroscience
Ren Y, Whittard J, Higuera-Matas A, Morris CV, Hurd YL. Cannabidiol, a nonpsychotropic component of cannabis, inhibits cue-induced heroin-seeking and normalizes discrete mesolimbic neuronal disturbances. The Journal of neuroscience : the official journal of the Society for Neuroscience. 2009;29(47):14764-14769. doi:10.1523/JNEUROSCI.4291-09.2009.