> Is there any reason to treat these as drugs instead of just poisons? because they have useful medical effects, a safe dose, and a decent therapeutic index. T

> Is there any reason to treat these as drugs instead of just poisons? because they have useful medical effects, a safe dose, and a decent therapeutic index. They have accepted uses in human and animal medicine. That the effective (and lethal) doses are both very small (and thus hard to precisely meter and dispense) only becomes a problem for people who can't access pharmaceutical-grade opioids.