Citric and/or fumaric acid (provides tartness), dextrose, monocalcium phosphate (controls acidity), artificial flavor, ascorbic acid (vitamin c), us certified food color (red 40 and blue 1), dioctyl sodium sulfosuccinate (for solubility).
Manufacturer likely did not include an allergen statement; however, please double-check the product packaging and/or contact the manufacturer if you have a severe food allergy.