It is recommended that you consult a healthcare practitioner prior to use to determine if this product is appropriate for your medical condition and/or prescription medications. Consult a healthcare practitioner prior to use if you are of childbearing age. Consult a healthcare practitioner prior to use if you are taking sulfonamides. Consult a healthcare practitioner prior to use if you have a seizure disorder. Caffeine has been shown to reduce blood flow to the heart muscle during exercise, which can lead to cardiovascular complications such as chest pain and irregular heartbeat, even in healthy people. If these symptoms occur, discontinue use and consult a healthcare practitioner. Consult a healthcare practitioner prior to use if you have high blood pressure, glaucoma, and/or overactive bladder syndrome. This product is not intended to replace sleep. Avoid taking with health products or foods that contain caffeine and/or increase blood pressure (e.g., medications, coffee, tea, colas, cocoa, guarana, mate, bitter orange extract, synephrine, ocotopamine, ephedra, ephedrine). Consult a health care practitioner if you have kidney problems and/or diabetes. Consult a health care practitioner prior to use if you are taking blood thinners. Consult a health care practitioner prior to use if you have a history of non-melanoma skin cancer. Consult a health care practitioner prior to use if you have cancer. Consult a health care practitioner prior to use if you have cardiovascular disease or diabetes. Caffeine may cause anxiety, rapid heart rate (tachycardia), palpitations, insomnia, restlessness, nervousness, tremors, and headache. Discontinue use if hypersensitivity/allergy occurs. Some people may experience constipation, diarrhea, and/or vomiting. May cause digestive upset. Do not use if you are pregnant or breastfeeding.