Only Doppio – Tempo and Primo do not.
Doppio energy sachets contain 75mg of natural caffeine from Guarana, the equivalent of a large espresso.
Caffeine doesn't actually give you more energy, it improves reaction speed, alertness & concentration whilst reducing your perception of exertion. You feel more awake & your efforts feel less strenuous, allowing you to exercise harder for longer.
Guarana is absorbed slowly by the body, creating a state of calm alertness, with a less jittery, more sustained energy boost... a stark contrast to the fast rush & crash experienced with brewed coffee or synthetic energy gels. Go natural caffeine!