It's really balance we are after ! I take magnesium with a little fresh lemon in distilled water for this effect. Contrary to what many say its the balance between alkaline and acid that creates the electromagnetic energy that makes the body run.
Do you have a link to this product? I find bottled waters a little too pricey and generally these alkalizing drinks on the shelves are just magnesium anyway! But if you do decide to use it just add a little lemon or apple cider vinegar for the balancing effect!