Chewing gum, typically derived from tree sap, is a soft, rubbery substance.
While gum is not a natural source of caffeine, manufacturers do occasionally add caffeine to their formulas.
Caffeinated gum has become popular among athletes and anyone looking for an energy boost.
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According to research, chewing gum absorbs caffeine faster than tablets.
This fast absorption is most likely due to caffeine being absorbed through the buccal mucosa in the inner cheek.
Caffeine is known to improve athletic performance, which is why the National Collegiate Athletic Association (NCAA) prohibits the use of caffeinated gums and other caffeine sources among players.
Caffeinated chewing gum can increase alertness and attention span.
For example, RunGum has 50 mg of caffeine per two pieces of gum.