One of the biotechnology fields which is beginning to have a significant impact upon neuropharmacology is that of new drug delivery systems. In recent years, drug delivery technology has made some exciting strides beyond the traditional forms of drugs in tablets and capsule form or parenteral injection formulations. New drug delivery systems are being developed to achieve rate-controlled, targetted delivery to the CNS to ensure not only that a therapeutic agent gets into the CNS, but that it does so at the right dose, and at the desired rate. Here we review some of the advances in modern drug delivery technology which have recently become available for clinical applications in the field of neurology.