For some reason the caffeine gum is very hard to find in stores. Target does not have any, Walmart does not, popular grocery stores, 7-11 and convenience stores do not have this to buy. There used to be a good assortment of these caffeinated gum, and even a selection of caffeine mints. Now, you have to go online and buy these. Not much in the way of a health item, although it does contain ginseng and guarana (the natural caffeine).
Two pieces of the gum equal the caffeine in a cup of coffee.