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.
Although the ovarian cancer chemotherapy options are limited, new drugs are being investigated in combination with chemotherapy. One of the most promising drugs is Avastin, an antiangiogenesis inhibitor. Avastin works by stopping new blood vessel growth, essentially cutting off the nutrient supply to the tumor.