‘A drug which reduces the desire for marijuana and blocks its effect on the brain has been successfully tested in rats. Scientists say the findings may translate into better therapies for cannabis addiction in humans. [..]
Over a period of three weeks the rats learned to enjoy the effects of synthetic THC and frequently self-administered the drug. By comparison, rats that received saline solution did not press the lever often.
Goldberg’s team then injected the rats with a compound derived from the seeds of the Delphinium brownii plant, which is in the buttercup family. The compound, known as methyllycaconitine (MLA), had a dramatic effect on the animals’ behaviour.
On the day that they received MLA they pushed the lever for synthetic THC 70% less than before. The drug did not seem to otherwise change the rats’ movement and coordination, and had no other apparent side effects.’