Medically reviewed by Kristie Reed, PharmD Key Takeaways Green tea extract and caffeine together can boost focus and mental ...

According to the nutritionist, the best way to consume L-theanine is to blend green tea with apples and other ingredients ...

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 ...

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Some claim it gives you energy and focus—without the jitters and crash.

Wondering if coffee or energy drinks are better for you? Discover their pros, cons, and the healthiest way to get your caffeine fix.