Epinephrine, which came into medical use in 1905, is a medication used to treat a number of conditions, including anaphylaxis, cardiac arrest, and superficial bleeding. Plus, its inhaled form may be used to improve the symptoms of croup or for asthma when other treatments are not effective. Also called Adrenaline, Epinephrine has indeed powerful effects on the body such as increased blood sugar levels, increased heart rate and relaxation of smooth muscle in the airways to improve breathing. These effects, of course, are designed to provide your body with extra energy. In fact, when you’re very stressed or afraid, your body releases a flood of epinephrine (hormone). This is known as the fight-or-flight response, or adrenaline rush. Bear in mind that Epinephrine, as a medication, may cause shakiness, anxiety, and sweating. A fast heart rate and high blood pressure may also occur. And while the safety of its use during pregnancy and breastfeeding is unclear, the benefits to the mother must be taken into account.