Whoa i just drank 3 bottles of the stuff back to back and i don't ever touch coffee so i'mpretty wired with 90 mimutes of work left.
JOLT!!!
Fun fact: An 8 oz. cup of coffee has 3 times the caffeine of a 12 oz. Jolt.
It really depends on howo its brewed. Jolt has 6 Mgs/1oz and comes in 20oz bottles for 120 mg per bottle. Coffee varies depending on how it is prepared but you average brewed coffee has between 80-135 mg per 7oz serving. Drip coffee will be between 115-175 though.
See here for more info.
http://www.erowid.org/chemicals/caffeine/c...ine_info1.shtml