Pharmaceutical companies are developing better drug delivery vehicles with the help of nanotechnology . Unspecificity causes undue wastage of drug, potency reduction and undue side effects during therapy. This problem become serious when patient is suffering from life threatening disease like cancer and use of chemotherapy is a part of therapeutic regime. Easy modification, customizability and cost of product are expected to be the main reasons determining the commercial success besides their pharmacological benefits. Huge investments in research and development are expected to help in identifying useful nanoparticles based drug delivery vehicles. Several methods have been identified by pharmaceutical companies in past few years and many more are being under development.
http://www.azonano.com/news.aspx?newsID=32561

......closer to mainstream acceptance everyday