If your diet is already high in other sulfur-rich foods (like garlic, onions, and cruciferous vegetables) or common reflux triggers (like spicy foods, caffeine, or alcohol), adding glutathione might be the straw that breaks the camels back.
Outside the US it is supplied as a research-grade peptide and is not approved for human use by any major regulator
If your B12 deficiency is due to inadequate vitamins in your diet, you may be prescribed B12 tablets to be taken between your meals
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