Primatene Mist contains the active ingredient epinephrine inhalation aerosol to breathe in and help those with asthma relief when it's needed the most. The Primatene inhaler is the only FDA-approved, over-the-counter inhaler for temporary relief of mild symptoms of intermittent asthma including wheezing, tightness of chest and shortness of breath. It has 160 metered sprays and provides 0.125 mg per spray to help those with symptoms at home or on the go. With a new formulation, this product is fast-acting and will help make breathing easier. For more advanced symptoms or prolonged sufferers, a medical professional should be seen. This item is designed for oral inhalation use only.