<unk>  also known as adrenaline, is a medication and hormone. As a medication, it is used to treat a number of conditions, including anaphylaxis, cardiac arrest, asthma, and superficial bleeding. Inhaled<unk> may be used to improve the symptoms of croup. It may also be used for asthma when other treatments are not effective. It is given intravenously, by injection into a muscle, by inhalation, or by injection just under the skin. Common side effects include shakiness, anxiety, and sweating. A fast heart rate and high blood pressure may occur. Occasionally, it may result in an abnormal heart rhythm. While the safety of its use during pregnancy and breastfeeding is unclear, the benefits to the mother must be taken into account.<unk> is normally produced by both the adrenal glands and a small number of neurons in the brain where it acts as a neurotransmitter. It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation, and blood sugar.<unk> does this by its effects on alpha and beta receptors. It is found in many animals and some one cell organisms, but the medication is produced synthetically and is not harvested from animals. Jōkichi Takamine first isolated<unk> in 1901 and it came into medical use in 1905. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication. In 2017, it was the 263rd most commonly prescribed medication in the United States, with more than one million prescriptions.
Epinephrine 
Norepinephrine
Norepinephrine 
Ethylnorepinephrine
Dicycloverine
Bromethalin
Hyoscyamine
Adrenaline