Fizzy Mag 75 ServingsTasty lemon lime flavored effervescent powder features essential minerals like magnesium to support brain health, sleep quality and nerve and muscle health in children.* When it comes to the most important nutrients our little ones need these days, magnesium is certainly toward the top of that list, if not number one. Magnesium is a mineral needed by every cell; it activates at least 350 different enzymes in the body, more than any other mineral, so