Jettes are for use by people at least 21 years of age, that already smoke. Children, pregnant/breast feeding women, persons with or at risk of heart disease,high blood pressure, diabetes, should NOT use this product. If you are currently on any medication consult a physician before use. If you have a negative reaction to nicotine such as dizziness, vomiting, diarrhea, nausea, weakness and rapid heartbeat contact a health professional immediately. Although this product is much more safe than smoking, nicotine still has negative health effects, and it is recommended you make an educated decision before use of this product. If you do use tobacco products we encourage you to stop, and we offer our product as a gateway to do so.