There is tendency to look for single causes for anxiety attacks. This is in line with traditional medical practice where usually single agents - pharmaceutical drugs - are used to treat anxiety and other mood disorders. But single agents, drugs or nutrients or supplements seldom do the job, because if we want to treat mood disorder we are in fact dealing with a complex biochemical abnormality that can have multiple causes or deficiencies. Furthermore because of our individual biochemistry what may be good for one person may be poison to an other.