Some say it's not an opiate painkiller like Oxy, but Klonopin. And doctors are doling it out like candy, causing a surge of hellish withdrawals, overdoses and deaths.You could argue that the most dangerous “drug” in the world is the venom from a jellyfish known as the Sea Wasp, whose sting can kill a human being in four minutes—up to 100 humans at a time. Potassium chloride, which is used to trigger cardiac arrest and death in the 38 states of the U.S. that enforce the death penalty is also pretty deadly . But when it comes to prescription drugs...