Magnesium Boost Lemon Lime Flavour Effervescent 20sMagnesium contributes to normal energy yielding metabolism and to the reduction of tiredness and fatigue. Magnesium supports electrolyte balance and normal functions of teeth, bones and muscle function. Magnesium aids normal functioning of the nervous system and psychological function. SCI FIT? HYDRO TABS serve up a refreshingly great tasting electrolyte drink that offers a faster, easier and more effective way of staying hydrated throughout the day,