<<Disclaimer: Verify this information before applying it to your situation.>> Has anyone had any experience with the drug Hydergine? It is FDA approved for cerehrovascular insufficency, which is caused by poor blood circulation to the brain. Hydergine is said to increase the blood supply in the head. The granddaddy of the so-called smart drugs, hydergine has a long history as a mental de-ager. An extract of ergot, it is a fungus that grows on rye, hydergine (also known as dihydroergotoxine) was developed in the 1940s as a treatment for hypertension. Because it is a fungus that grows on rye, should hydergine be used by CD and DH individuals? Bill Vellios, Ballwin, MO