You can now add coffee to the growing list of foods and drinks that are available as products infused with marijuana.
Several companies have started selling cannabis-laced coffee, claiming to give users an added "buzz" to their cup of joe.
But what happens when you combine two psychoactive substances: marijuana and caffeine?
The effects of using these two substances in combination have not been heavily researched, said Dr. Scott Krakower, the assistant unit chief of psychiatry at Zucker Hillside Hospital in New Hyde Park, New York. But using two drugs in combination can always potentially be a problem, he said.
There is some evidence from lab and animal studies that suggests that taken together, caffeine and marijuana "would mix, neuro-chemically," Krakower told Live Science. In other words, they woul...