Talk about spinning your wheels - or perhaps wings! Some scientists with nothing else to do have discovered that Viagra helps hamsters overcome jet lag.  Only mind you, if they are travelling west to east. 

No mention of whether it only helps male hamsters.

Plenty of mention of the possible side effects involved. No mention of the fact that melatonin, at a fraction of the cost and NONE of the side effects, is readily available and has no sense of direction or gender. I can imagine which one the flight attendants, at least, might prefer to be used!

Viagra and jet lag 

Facts about  Melatonin