That 5 hr stuff is mainly B vitamins... B12 B6
it would be cheaper to just buy a couple bottles of the B vits. and a cup o coffe
taking oh, I dont know, 3-6 mixed B type vits., depending on the mlg that you purchase,would basicly do the same as the high priced Energy shot and B vits would last you longer.
the label on the lil Energy bottle says something like its 1 or 2 thousand percentage of the normal RDA of B vits I am not a doctor

but I would also

the info, don't take my vague info as religion though
I buy b6 and b`12 vits. at walmart
then when I go out partying, I take 3-4 of each, then I am set for the nite!!! go cat go
it works ! lotsa energy and its safe AND legal!!