WOW.....some people need to just chill. This is a forum isn't it?
It's not like hes asking whether he can take alcohal and vicodin (Which is very dangerous), cannabis + codeine dont have any negative interactions, coming from someone with chronic pain and goes through that "Lovely" feeling everyday
However I've heard they the two do seem to intensify the other, because the receptors the drugs use are somewhat of the same. Just watch out for the Acetemophin(Sp), that will destroy your liver.