Flavour: lemon & lime made with a light splash of natural fruit flavour. Refresh your gut health routine with the award-winning ió lemon & lime crisp, clean, and backed by science.. Each crystal-clear bottle delivers: 100% daily prebiotics 20% daily fibre only 21 calories no added sugar or artificial ingredients. Winner of the world’s best drink innovation award clinically proven to support gut health and lower blood sugar levels*. Gentle flavour. Powerful and proven benefits. That’s ió. . *Based on studies by glasgow caledonian & roehampton university.