Artificially flavored. 1 piece = 40 mg of caffeine. One serving (1 piece) contains 40 mg of caffeine, or about as much caffeine as 1/2 cup of coffee. 25% fewer calories than sugared gum. Calorie content of this size piece has been reduced from 7 to 5 calories. Produced with genetic engineering. Visit www.alertgum.com for more information about caffeine and responsible consumption. Questions? Comments? Call 1-800-974-4539. Dispose of properly. Packaged in Mexico.