Not intended for use by persons under 18. Do not use if you are pregnant or nursing. Discontinue use and call a medical doctor immediately if you experience irregular heartbeat, chest pain, difficulty breathing, dizziness or other similar symptoms. Consult a medical doctor before use if you have been treated for, or diagnosed with or have a family history of any medical condition or if you are using any prescription or over-the-counter drugs. One serving (2 capsules) of this product contains about as much caffeine 2 cups of coffee. Caffeine sensitive individuals may experience the following symptoms including (but not limited to) restlessness, nervousness, tremors, headache, anxiety, palpatations, increased heart rate, or difficulty sleeping.