Poisons, toxins and venoms vary by several attributes, such as delivery method or time needed to take effects. See Random Poison Types for options. Other types of poisons may exist, as well.
The most dangerous poisons take effect immediately and cause death. This is the default type of poison in the core BFRPG rulebook. The primary way solution to poison is the spell Neutralize Poison, which allows a grace period of 10 rounds to revive a dead target. Various anti-toxin potions operate similarly. If such a potion exists, it’s possible to pour it into the mouth of the unconscious victim.