what is caffeine used for
Powdered caffeine is caffeine in this pure form, and as a supplement it is most commonly used to increase mental alertness and counteract fatigue. At certain doses, caffeine in any form can be addictive, and in large doses it can cause serious side effects, such as cramping, heart palpitations and even death.owdered caffeine is caffeine in this pure form, and as a supplement it is most commonly used to increase mental alertness and counteract fatigue. At certain doses, caffeine in any form can be addictive, and in large doses it can cause serious side effects, such as cramping, heart palpitations and even death.