According to a team of Argentinian scientists, Viagra is beneficial for more than just erectile dysfunction: if you are the type who suffers terribly from jet lag and if you are east-bound then the drug could be beneficial. Viagra only seems to alleviate jet lag if you are heading in this particular direction and have access to light therapy. This is because the light to dark cycle helps us be active in the day time and ready for sleep at night.
This research is based on a study carried out on mice and has not been tested on human beings as yet. It is published in Proceedings of the National Academy of Scientists. Turning on lights six hours earlier brought the light-dark cycle forward by 6 hours. Injecting Viagra into the mice just before their body clocks would normally shift made the mice adapt more quickly to their new cycle. Only a low dose of the drug was administered and so the mice did not experience penile erections.
The drug did not seem to work without the light change and so both needed to be used simultaneously. For the meantime, Viagra should only be used for the treatment of erectile dysfunction. The use of Viagra for jet lag seems limited. We actually recommend Circadin (melatonin), which we are happy to prescribe off label for jet lag.