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.
Causes of Variant (Prinzmetal) Angina: The pain from variant angina is caused by a spasm in the coronary arteries (which supply blood to the heart muscle). The coronary arteries can spasm as a result of:Symptoms of Variant (Prinzmetal) Angina: The pain or discomfort: Treatment of Variant Angina | Prinzmetal's Angina.Medicines can help control the spasms. Drugs such as calcium antagonists and nitrates are the mainstays of treatment.nlike typical angina â which is often triggered by exertion or emotional stress-Prinzmetalâs angina almost always occurs when a person is at rest, usually between midnight and early morning. These attacks can be very painful. Prinzmetal angina may also be referred to as: 1  Variant angina. 2  Prinzmetal's variant angina.