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 list of types of Angina mentioned in various sources includes: 1  Stable angina-a regular pattern of angina; the most common type. 2  Unstable angina-a new, irregular or changed pattern of angina. 3  Needs urgent medical attention for possible heart attack or heart disease. Stable angina-a regular pattern of angina; the most common type. 2  Unstable angina-a new, irregular or changed pattern of angina. 3  Needs urgent medical attention for possible heart attack or heart disease.