You know how green tea gives you focus without making you feel wired? That's L-theanine. An amino acid naturally found in the leaves.

We extract it and add it to every cup of Javasu. Here's why.

Caffeine works by blocking the chemical in your brain that makes you feel tired. That's the alertness. But it also pushes your nervous system into overdrive, which is where the jitters, the racing heart, and the anxiety come from.

L-theanine works on a different part of your brain entirely. It increases your calming neurotransmitters. Think of the state you're in when you're completely absorbed in something you enjoy. Alert, but calm.

When the two meet in the same cup, something happens that neither can do alone. The caffeine keeps you sharp and awake. The L-theanine keeps you calm and focused. Multiple studies have found that the combination improves both speed and accuracy on mental tasks better than either one on its own, while also reducing distraction.