Caffeine has been used for centuries in a number of cultures around the world. Found in a variety of seeds, leaves, and other natural sources, caffeine is a drug that gives the body a temporary boost of energy. Coffee is the most popular form of caffeine, and many people drink coffee for caffeine’s stimulating effects. With caffeine pills, you can enjoy the benefits of coffee with the convenience of a tiny pill. Caffeine pills deliver a quick boost of energy that can get you through that late-night study session or that hard work day following a sleepless night.