dr gordon lynn berg is the director. he noticed there was something different about patients injured in butane hash oil explosions. >> we were giving patients working. >> reporter: on a hunch he prescribed marin ol, a synthetic pill used in cancer and h.i.v. patients. he was giving them more t.h.c. away. >> the pain was a lot easier. they didn't throw up. they kept it in. limbaugh believed they'd been in marijuana withdrawal. what i worry about is how much marijuana people are taking as a result of the loss. we never had people falling off of balconies, or ending in emergency rooms with psychosis from too much marijuana, or anyone withdrawing from it. with xa traction you deal with t.h.c. >> this summer a new law went into effect. making it illegal to manufacture marijuana concentrates. the state is considering new rules for edibles, like banning the word candy from the label. >> ahead, as the u.s. opens up marijuana laws, others are taking note. after the break - we head to al jazeera america, where until erica, where u