What are ergot alkaloids?

Answer:
Ergot alkaloids are derived from a fungus, Claviceps purpurea, which grows primarily on rye grain. The fungus forms a hard blackish body known as a sclerotium, which contains alkaloid compounds that can be used to treat migraine headache.
First answer by Gale Ency. of Surgery. Last edit by Gale Ency. of Surgery. Contributor trust: 10 [recommend contributor recommended]. Question popularity: 1 [recommend question].