Dietary Supplement. All natural. No preservatives. Get up and keep going with the first time-release formula for long-lasting energy. The all-natural combo of catuaba, muira pauma, epimedium, and yerba mate can provide stamina support for up to 6 to 8 hours. Created by physicians. Are you as tired as we are of all those artificial, toxic-tasting energy drinks? Or are you just plain tired? The docs at function worked around the clock to develop a 100% natural energy formula that will keep you going all day and all night long. We've assembled an all-star team of rare rainforest imports (now grown at home), including muira pauma, catuaba, guarana and yerba mate, which release energy at a smooth, steady rate over a longer period of time. This means a consistent, all natural energy supply without the dreaded crash. Get up and stay up with Function: Alternative Energy. (These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.) Made in America.