This product is only intended for healthy adults, 18 years of age or older. Do not use if pregnant or nursing, currently taking PDE5 inhibitors nitrates for chest pain. Do not take this product before consulting a licensed, qualified, health care professional if you are taking any other dietary supplement, prescription drug over-the-counter medication; or if, you suspect you have or have been treated for, diagnosed with or have a family history of, any medical condition. This product contains caffeine or stimulants from other sources. Discontinue use 2 weeks prior to surgery. Immediately discontinue use and contact a medical doctor if you experience any adverse reaction to this product. Do not continuously for more than 8 weeks.