Each caffeine gum contains Guarana, Ginseng, Vitamin B6, B12, and a total of 41mg of caffeine. About the same as half a small Red Bull (80mg caffeine).
There are many situations where a gum is more convenient than an energy drink. Work, school, dinner with friends. It also provides fresh breath, so it really seems like a good alternative for alot of situations. Only thing left is to put it to the test and review it.