Viagara that can be applied topically by rubbing it on the desired area. I wouldn't want to be researcher running the animal experiments.
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.
Of the seven rats treated by the Albert Einstein College of Medicine in New York, five showed signs of arousal, according to results presented to the American Urological Association (AUA).
And just imagine all the rubbing required to establish a control group.