Two of the largest life insurance providers in Canada have changed their stance on pot smokers, and have decided to no longer treat them like cigarette smokers. This is great for pot smokers using these companies' policies who used to have to pay the same high premium as those who enjoy smoking tobacco.
Stay away from synthetic drugs and harsh chemicals. If you want to consume marijuana, always make sure you are doing it legally and are abiding by all regulations of the jurisdiction where you are present. Choosing to ingest spice or any other nonsense because you were unable to find legal marijuana is no better than dating a wood chipper because you were having a hard time finding an actual girl.
While science is always evolving and nothing is ever fully known beyond the possibility of future findings, it is safe to say that as of today, the current scientific data suggests that any kind of true overdose would require such a herculean amount of marijuana in your system that it becomes all but impossible.