Scientific Name:Delphinium species
Family:Ranunculaceae
Toxic Principles:Diterpene alkaloids
Clinical Signs:Unless there is a lack of suitable forage, horses typically do not consume toxic amounts of larkspur. The toxicity of the plant may vary depending on seasonal changes and field conditions; as the plant matures, it generally becomes less toxic. The alkaloids in the plant cause neuromuscular paralysis; clinical effects include constipation, colic, increased salivation, muscle tremors, stiffness, weakness, recumbency, and convulsions. Cardiac failure may occur, as can death from respiratory paralysis.