A friend was recommended by his doctor to add lemon juice to his water (among other precautions) to prevent kidney stones. He and I were discussing whether store bought bottled lemon juice from concentrate would be as good as the real thing (juice squeezed from fresh lemons) in this particular case. So I went down to the local supermarket and picked up a bottle of lemon juice from concentrate, whose ingredients read:
Lemon Juice From Concentrate (Water, Lemon Juice Concentrate), Sodium Benzoate, Sodium Bisulfite and Lemon Oil.
Lemon oil sounds perfectly fine, but would Sodium Benzoate or Sodium Bisulfite interfere with the alkalinizing of the urine (which is what the role of the lemon juice is) in any way? If one were to use a large amount of lemon juice from concentrate, would the Sodium Benzoate and Sodium Bisulfite add up to significant amounts to cause a problem at all?
Thanks in advance