Antidotes or cures for particular toxins are produced using the toxin itself. Small doses of the toxin are injected into an animal to stimulate the animal’s immune system to produce antibodies to destroy the toxin. Serum (containing the antibodies) is harvested from the animal’s blood, and this serum with the antibodies becomes the antidote for that particular toxin. Some toxins have no known antidote, such as highly poisonous aconitine – a toxin derived from the aconite plant species. However, this toxin can be given in small doses as a calming medicine!