I do think this would be a really good subject for Runners' World to look at.
What's available on-line and what you should avoid, most of the readers are newbies doing first longer runs. There must be some temptation to take "magic" potions.
In our running club it's Beetroot juice and some disgusting V8 type drink that are "flavour" of the month.
Edited: 30/01/2013 at 19:07