New Viagra rival? Drug that can be rubbed directly on skin.

[doc]

A new generation of anti-impotency drugs that are rubbed into the skin could prove more effective than Viagra, research indicates.

Scientists in the United States have successfully tested the new technique – which involves tiny objects called nanoparticles – on rats and believe it could also be used to help humans.

Under the therapy, nanoparticles that release the anti-erectile chemical nitric oxide are rubbed on the problem area, and absorbed directly into the skin.