Claviceps purpurea (Rye ergot fungus) is a fungus parasite growing on some cereals and grasses, forming the so-called. ergot. It contains 30 indole alkaloids, histamine and tyramine, dyes, phytosterols and oil used in the manufacture of medicines to improve blood circulation, antihaemorrhagic prevents contraction of the uterus. There are many contraindications for use during pregnancy, heart disease, kidneys or liver insufficiency.