What is Capsiplex? Capsiplex is a food supplement designed to be taken as part of a healthy diet & exercise regime. It's not designed to replace a good diet & exercise, it's designed to help & enhance it. Capsiplex contains capsicum (chili) & caffeine. Which means it can help increase attention & alertness, support performance & capacity & exercise endurance. And remember... life shouldn't be about how big you are, it should be about how energetic & confident you feel! But as Capsiplex is a food supplement you take with a normal balanced diet, it can help with both.