Caffeine is extracted from the roots of some plants as well as from the leaves like tea leaves, but thanks to modern society, we now have them in the powder form as well as in tablet or pill forms. These are more potent than what you might find in a cup of coffee or tea, and the effects are longer, but it does not necessarily mean that you have to always take it when the need arise. You have to control your intake so as not to abuse this medication.
