Do not use if pregnant or nursing. Not intended for use by persons under 18. Consult a medical doctor before use if you have been treated for or diagnosed with, or have a family history of any medical condition including (but not limited to) anxiety disorders, cardiac conditions, diabetes, glaucoma, hypertension, or osteoporosis, or if you use any prescription or over-the-counter medication(s). One serving (2 caplets) of this product contains about as much caffeine as 4 cups of coffee (caffeine is released over a period of time). Do not combine with other sources of caffeine (e.g., tea, coffee, or cola beverages). Discontinue use and call a medical doctor immediately if you experience irregular hearbeat, ches pain, dizziness, headache, nausea, or other similar symptoms. Do not exceed recommended serving. Improper use of this product will not improve results and is not advised. Use only as directed.