NOT TO BE USED BY ANYONE UNDER THE AGE OF 18. Do not use if pregnant or nursing. Never exceed the recommended maximum dosage. Do not consume synephrine, caffeine or thyroid-boosting compounds from other sources, including but not limited to coffee, tea, soda and other dietary supplements or medications containing phenylephrine, caffeine or any stimulants whatsoever. This product contains caffeine. Do not use this product for longer than 8 weeks and make sure that usage is followed by a 2-week off-period. Consult your physician prior to use if you are taking medication, including but not limited to MAOI inhibitors, anti-depressants, aspirin, non-steroidal anti-inflammatory drugs or products containing phenylephrine, ephedrine, pseudoephedrine, phenylethylamine or other stimulants. consult your physician prior to use if you have a medical condition, including but not limited to heart, liver, kidney or thyroid disease, psychiatric disorders, difficulty urinating, diabetes, high blood pressure, pernicious anemia, cardiac arrhythmia, hyper beta-alaninemia, recurrent headaches, enlarged prostate or glaucoma. May cause flushing and itching. Discontinue use 2 weeks prior to surgery. Immediately discontinue if you experience rapid heartbeat, dizziness, severe headaches or shortness of breath. Store out of sunlight in a cool, dry place. This product contains ingredients that may be banned by some sports organizations. As individuals vary so may results from using this product.