This product contains a significantly potent xanthine (i.e., caffeine and caffeine-like stimulants) mixture of about 100 mg per regular 2-MetaCap serving. Consult your physician before use if you are sensitive to stimulants. Do not exceed suggested daily serving. Not for use by individuals under the age of 18 years. Do not use if pregnant or nursing. Keep out of reach of children. Use only as directed. Individual results will vary. Use in conjunction with any sensible diet and exercise program. Limit the use of caffeine-containing medications, foods or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness and occasionally, rapid heartbeat. For additional information on this or any other Jillian Michaels product, please call our experienced customer service representatives at: 1-800-898-5153.