Natural lemon flavor with other natural flavors. All natural. 50 calories per serving. Off city highway my bike takes to mountain trail kissing earth again - Haiku by Daniel Angel Martinez USA. 50 calories per serving. A hint of stevia. Catechins/EGCG: Powerful antioxidants in tea - help maintain a healthy heart and neutralize free radicals. Caffeine: Tea contains approximately 1/3 the amount of caffeine found in coffee (may vary with brewing strength). TeasTea.com. comments at itoen.com. Contains 1% juice. BPA free. Product of USA.