An Australian company named Starpharma seems to be well out in front.
go here to read what they have in the market and whats about to be released
http://www.starpharma.com/
I always tell my friends imaging life before plastic
then imaging the same changes will occur when nano products are readily available in the market
Starpharma already has products in the market and one interesting anti viral gel for herpes, AIDS, HPV, just about to be released
Disclaimer: i own shares in the company - SPL