Caffeine pills and coffee can both give you an extra boost of energy. Coffee drinkers enjoy the flavor and fulfillment of a hot cup on a cold day. Others consider coffee to be bitter and would rather get caffeine in a different way. Caffeine pills don't have the flavor or aftertaste of coffee that can be off-putting to some. When used correctly, caffeine pills can be a safe caffeine alternative for those who don't want to bother with coffee.