In this method, caffeine is extracted from tea. The type of tea that is used isn't very important (as long as it is caffeinated). The amount of caffeine recovered is small, but this is for fun and not ...

Guarana contains more caffeine than coffee, but both substances have health benefits. Consuming too much caffeine from any source can cause unwanted side effects. Guarana and coffee contain different ...

Life Kit offers tips on how to better understand the effect caffeine has on our bodies, and make sure your relationship with your favorite caffeinated drink is a healthy one. Caffeine is the most ...