Are you as tired as we are of all those artificial, toxic-tasting energy drinks? Or are you just plain tired? The doctors at Function worked around the clock to develop an all natural energy drink that will keep you going all day and all night long.

We've assembled an all-star team of rare rainforest imports, including muira puma, catuaba, guarana and yerba mate, which release energy at a smooth, consistent rate over a longer period of time. This means no scary heart palpitations or dizzying crashes after your initial boost. Get up and stay up with Alternative Energy.

Function: Make your drink work for you. read more >>

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