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.
Angina (say ANN-juh-nuh or ann-JY-nuh) is a symptom of heart disease. Angina happens when there is not enough blood flow to the heart muscle. This is often a result of narrowed blood vessels, usually caused by hardening of the arteries (atherosclerosis).Angina can be dangerous.ngina happens when there is not enough blood flow to the heart muscle. This is often a result of narrowed blood vessels, usually caused by hardening of the arteries (atherosclerosis).