Tamper evident. Do not use if seal is broken. Caution: Contains caffeine comparable to 12 ounces of the leading premium coffee. Limit caffeine products to avoid nervousness, sleeplessness, and occasional rapid heartbeat. You may experience a Niacin Flush (hot feeling, skin redness) that lasts a few minutes. This is caused by increased blood flow near the skin. Do not take if you are pregnant or nursing. Not recommended for children. If you are taking medication or have a medical condition, consult your doctor before use. Phenylketonurics: Contains phenyalalanine.