This product is intended for use by persons over the age of 18, and is not to be sold to children. This product should not be used by women who are pregnant or breast-feeding, or any persons with or at risk of heart disease, high blood pressure or diabetes, or allergic to nicotine or propylene glycol. Nicotine is addictive and toxic by inhalation, direct contact with the skin, or if swallowed. Nicotine can increase your heart rate and blood pressure and may cause dizziness, nausea, and stomach pain. Ingestion of concentrated nicotine can be poisonous.