Metaplus proprietary blend: taurine, guarana extract (seed), caffeine (as caffeine anhydrous), glucuronolactone, ginger extract (root), green tea leaf extract standardized to 15% egcg. Other ingredients: carbonated filtered water, citric acid (citric acid is added for flavor; it is not used as a preservative), natural flavor, sucralose, beta-carotene (color).
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.