Aconitine (Aconitinum) - alkaloid contained in the plant Borets, or Aconite (Aconitum), FAM. (Ranunculaceae). Application of aconitine on the skin causing itching followed by anaesthetic. When resorptive effect excites, and then paralyzes different parts of the nervous system, violation of the heart rhythm. Currently only used in homeopathy, Tibetan medicine, as well as in the experiment to obtain models of arrhythmias.