Developments in technology have enormous potential to revolutionize drug delivery system. The overall aim is to allow drugs to be delivered to the areas within the body which they are targeting. The active ingredients after drugs are placed inside a wrapper that is genetically designed to locate a particular part of the body. The wrapper is attached to the cell receptors of the relevant area and attached to it, discharging its active ingredient. Early result are very impressive. Delivering anti-cancer drugs to the brain has been a major problem due to the blood-brain barrier. However, anti-cancer drugs bound to nanomaterials successfully cross the blood-brain and release the drugs at therapeutic concentrations in the brain.