Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction and burning with a lilac flame.
An antianginal is any drug used in the treatment of angina pectoris, a symptom of ischaemic heart disease.
The 10 Most Common Emergency Drugs. The 10 Most Common Emergency Drugs. 1  Epinephrine - increases heart rate, constricts blood vessels, dilates air passages.  Lidocaine - local anesthetic and antiarrhythmic drug.