The present invention is directed to multivalent Clostridial neurotoxin
derivatives having more than one binding domain directed to a cell
surface feature of a target cell. Such modified neurotoxins are useful as
therapeutic compositions to prevent exocytosis and secretion by the
target cell. Conditions in which such compositions man be useful include,
without limitation, disorders of the sensory or motor nervous system,
acute or chronic pain, cancer, pancreatitis, hyperhydrosis, glandular
disorders, viral infections, cystic fibrosis and the like. The invention
is also directed to methods of using and administering such a
composition, and methods of treating a given condition using such a
composition.